diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCacheLoader.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCacheLoader.java
index f151d95d13..e92ffbadcc 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCacheLoader.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCacheLoader.java
@@ -65,7 +65,7 @@ public class OperationTemplateCacheLoader extends CacheLoader<String, OperationT
         }
         try {
             ConnectionManagerUtils.openDBConnection();
-            return operationTemplateDAO.getOperationTemplate(subTypeId, deviceType, operationCode);
+            return operationTemplateDAO.getOperationTemplate(deviceType, subTypeId, operationCode);
         } catch (DBConnectionException e) {
             String msg =
                     "Error occurred while obtaining the database connection to retrieve operation template for "
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCodesCacheLoader.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCodesCacheLoader.java
new file mode 100644
index 0000000000..0ef73b66b4
--- /dev/null
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/cache/OperationTemplateCodesCacheLoader.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2018 - 2024, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package io.entgra.device.mgt.core.operation.template.cache;
+
+import com.google.common.cache.CacheLoader;
+import io.entgra.device.mgt.core.operation.template.dao.OperationTemplateDAO;
+import io.entgra.device.mgt.core.operation.template.dao.OperationTemplateDAOFactory;
+import io.entgra.device.mgt.core.operation.template.dao.impl.util.OperationTemplateManagementUtil;
+import io.entgra.device.mgt.core.operation.template.dto.OperationTemplateCacheKey;
+import io.entgra.device.mgt.core.operation.template.exception.DBConnectionException;
+import io.entgra.device.mgt.core.operation.template.exception.OperationTemplateManagementDAOException;
+import io.entgra.device.mgt.core.operation.template.exception.OperationTemplateMgtPluginException;
+import io.entgra.device.mgt.core.operation.template.util.ConnectionManagerUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import java.util.Set;
+
+/**
+ * Class for the Operation Template cache.
+ */
+public class OperationTemplateCodesCacheLoader extends CacheLoader<String, Set<String>> {
+
+    private static final Log log = LogFactory.getLog(OperationTemplateCodesCacheLoader.class);
+
+    private final OperationTemplateDAO operationTemplateDAO;
+
+    public OperationTemplateCodesCacheLoader() {
+        this.operationTemplateDAO = OperationTemplateDAOFactory.getOperationTemplateDAO();
+    }
+
+    /**
+     *
+     * @param key the non-null key whose value should be loaded
+     * @return
+     * @throws OperationTemplateMgtPluginException
+     */
+    @Override
+    public Set<String> load(String key) throws OperationTemplateMgtPluginException {
+        OperationTemplateCacheKey operationTemplateCacheKey = OperationTemplateManagementUtil.getOperationTemplateCodeCacheKey(
+                key);
+        String subTypeId = operationTemplateCacheKey.getSubTypeId();
+        String deviceType = operationTemplateCacheKey.getDeviceType();
+
+        if (log.isTraceEnabled()) {
+            log.trace(
+                    "Loading operation template for subtype Id : " + subTypeId + " & deviceType : " + deviceType);
+        }
+        try {
+            ConnectionManagerUtils.openDBConnection();
+            return operationTemplateDAO.getOperationTemplateCodes(deviceType, subTypeId);
+        } catch (DBConnectionException e) {
+            String msg =
+                    "Error occurred while obtaining the database connection to retrieve operation template codes for "
+                            +
+                            "subtype Id : " + subTypeId + " & device type : " + deviceType;
+            log.error(msg);
+            throw new OperationTemplateMgtPluginException(msg, e);
+        } catch (InvalidCacheLoadException e) {
+            String msg =
+                    "CacheLoader returned null for operation template codes for subtype Id : " + subTypeId
+                            + " & device type : " + deviceType;
+            log.error(msg, e);
+            return null;
+        } catch (OperationTemplateManagementDAOException e) {
+            String msg =
+                    "Error occurred in the database level while retrieving operation template codes for subtype Id : "
+                            + subTypeId + " & device type : " + deviceType;
+            log.error(msg);
+            throw new OperationTemplateMgtPluginException(msg, e);
+        } finally {
+            ConnectionManagerUtils.closeDBConnection();
+        }
+    }
+
+}
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/OperationTemplateDAO.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/OperationTemplateDAO.java
index 5a0c60947b..bc05df479d 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/OperationTemplateDAO.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/OperationTemplateDAO.java
@@ -21,6 +21,9 @@ package io.entgra.device.mgt.core.operation.template.dao;
 import io.entgra.device.mgt.core.operation.template.dto.OperationTemplate;
 import io.entgra.device.mgt.core.operation.template.exception.OperationTemplateManagementDAOException;
 
+import java.util.List;
+import java.util.Set;
+
 /**
  * This class represents the key operations associated with persisting mobile-device related
  * information.
@@ -31,8 +34,11 @@ public interface OperationTemplateDAO {
     OperationTemplate updateOperationTemplate(OperationTemplate operationTemplate)
             throws OperationTemplateManagementDAOException;
 
-    OperationTemplate getOperationTemplate(String subTypeId, String deviceType, String operationCode) throws OperationTemplateManagementDAOException;
+    OperationTemplate getOperationTemplate(String deviceType, String subTypeId, String operationCode) throws OperationTemplateManagementDAOException;
+
+    List<OperationTemplate> getAllOperationTemplates(String deviceType) throws OperationTemplateManagementDAOException;
 
-    void deleteOperationTemplate(String subTypeId, String deviceCode, String operationCode) throws OperationTemplateManagementDAOException;
+    boolean deleteOperationTemplate(String deviceType, String subTypeId, String operationCode) throws OperationTemplateManagementDAOException;
 
+     Set<String> getOperationTemplateCodes(String deviceType, String subTypeId) throws OperationTemplateManagementDAOException;
 }
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/OperationTemplateDAOImpl.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/OperationTemplateDAOImpl.java
index 67a356bca9..441521cba5 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/OperationTemplateDAOImpl.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/OperationTemplateDAOImpl.java
@@ -31,6 +31,10 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -102,7 +106,7 @@ public class OperationTemplateDAOImpl implements OperationTemplateDAO {
                 stmt.setString(5, operationTemplate.getCode());
                 stmt.executeUpdate();
 
-                return getOperationTemplate(operationTemplate.getSubTypeId(), operationTemplate.getDeviceType(), operationTemplate.getCode());
+                return getOperationTemplate(operationTemplate.getDeviceType(), operationTemplate.getSubTypeId(), operationTemplate.getCode());
             } catch (SQLException e) {
                 String msg = "Error occurred while processing update operation template.";
                 log.error(msg);
@@ -122,14 +126,14 @@ public class OperationTemplateDAOImpl implements OperationTemplateDAO {
      * @throws OperationTemplateManagementDAOException
      */
     @Override
-    public OperationTemplate getOperationTemplate(String subTypeId, String deviceType, String operationCode)
+    public OperationTemplate getOperationTemplate(String deviceType, String subTypeId, String operationCode)
             throws OperationTemplateManagementDAOException {
         try {
-            String sql = "SELECT * FROM SUB_OPERATION_TEMPLATE WHERE SUB_TYPE_ID = ? AND DEVICE_TYPE = ? AND OPERATION_CODE = ?";
+            String sql = "SELECT * FROM SUB_OPERATION_TEMPLATE WHERE DEVICE_TYPE = ? AND SUB_TYPE_ID = ? AND OPERATION_CODE = ?";
             Connection conn = ConnectionManagerUtils.getDBConnection();
             try (PreparedStatement stmt = conn.prepareStatement(sql)) {
-                stmt.setString(1, subTypeId);
-                stmt.setString(2, deviceType);
+                stmt.setString(1, deviceType);
+                stmt.setString(2, subTypeId);
                 stmt.setString(3, operationCode);
 
                 try (ResultSet rs = stmt.executeQuery()) {
@@ -151,22 +155,94 @@ public class OperationTemplateDAOImpl implements OperationTemplateDAO {
     }
 
     /**
-     * @param subTypeId
      * @param deviceType
-     * @param operationCode
+     * @param subTypeId
+     * @return
      * @throws OperationTemplateManagementDAOException
      */
     @Override
-    public void deleteOperationTemplate(String subTypeId, String deviceType, String operationCode)
+    public Set<String> getOperationTemplateCodes(String deviceType, String subTypeId)
             throws OperationTemplateManagementDAOException {
-        String sql = "DELETE FROM SUB_OPERATION_TEMPLATE WHERE SUB_TYPE_ID = ? AND DEVICE_TYPE = ? AND OPERATION_CODE = ?";
+
         try {
+            String sql = "SELECT OPERATION_CODE FROM SUB_OPERATION_TEMPLATE WHERE SUB_TYPE_ID = ? AND DEVICE_TYPE = ?";
             Connection conn = ConnectionManagerUtils.getDBConnection();
             try (PreparedStatement stmt = conn.prepareStatement(sql)) {
                 stmt.setString(1, subTypeId);
                 stmt.setString(2, deviceType);
+
+                Set<String> deviceTypes = new HashSet<>();
+                try (ResultSet rs = stmt.executeQuery()) {
+                    while (rs.next()) {
+                        deviceTypes.add(rs.getString("OPERATION_CODE"));
+                    }
+                    return deviceTypes;
+                }
+            } catch (SQLException e) {
+                String msg = "Error occurred while getting operation template codes for sub type id : " + subTypeId
+                        + " and device type : " + deviceType;
+                log.error(msg, e);
+                throw new OperationTemplateManagementDAOException(msg, e);
+            }
+        } catch (DBConnectionException e) {
+            String msg = "Error occurred while obtaining DB connection to getting operation template codes.";
+            log.error(msg);
+            throw new OperationTemplateManagementDAOException(msg, e);
+        }
+    }
+
+
+    /**
+     * @param deviceType
+     * @return
+     * @throws OperationTemplateManagementDAOException
+     */
+    @Override
+    public List<OperationTemplate> getAllOperationTemplates(String deviceType)
+            throws OperationTemplateManagementDAOException {
+
+        try {
+            String sql = "SELECT * FROM SUB_OPERATION_TEMPLATE WHERE DEVICE_TYPE = ?";
+            List<OperationTemplate> operationTemplates = new ArrayList<>();
+
+            Connection conn = ConnectionManagerUtils.getDBConnection();
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                stmt.setString(1, deviceType);
+                try (ResultSet rs = stmt.executeQuery()) {
+                    while (rs.next()) {
+                        operationTemplates.add(DAOUtil.loadOperationTemplate(rs));
+                    }
+                    return operationTemplates;
+                }
+            } catch (SQLException e) {
+                String msg = "Error occurred while loading operation template list.";
+                log.error(e.getMessage());
+                throw new OperationTemplateManagementDAOException(msg, e);
+            }
+        } catch (DBConnectionException e) {
+            String msg = "Error occurred while obtaining DB connection to loading operation template list.";
+            log.error(msg);
+            throw new OperationTemplateManagementDAOException(msg, e);
+        }
+    }
+
+    /**
+     * @param subTypeId
+     * @param deviceType
+     * @param operationCode
+     * @throws OperationTemplateManagementDAOException
+     */
+    @Override
+    public boolean deleteOperationTemplate(String deviceType, String subTypeId, String operationCode)
+            throws OperationTemplateManagementDAOException {
+        String sql = "DELETE FROM SUB_OPERATION_TEMPLATE WHERE DEVICE_TYPE = ? AND SUB_TYPE_ID = ? AND OPERATION_CODE = ?";
+        try {
+            Connection conn = ConnectionManagerUtils.getDBConnection();
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                stmt.setString(1, deviceType);
+                stmt.setString(2, subTypeId);
                 stmt.setString(3, operationCode);
-                stmt.executeUpdate();
+                return stmt.executeUpdate() == 1;
             } catch (SQLException e) {
                 String msg = "Error occurred while deleting operation template for sub type id : " + subTypeId
                         + " and operation code : " + operationCode;
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/util/OperationTemplateManagementUtil.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/util/OperationTemplateManagementUtil.java
index 917288eb6c..b4ba139f6e 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/util/OperationTemplateManagementUtil.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/dao/impl/util/OperationTemplateManagementUtil.java
@@ -59,8 +59,18 @@ public class OperationTemplateManagementUtil {
      * @param operationCode
      * @return
      */
-    public static String setOperationTemplateCacheKey(String subTypeId, String deviceType, String operationCode) {
-        return subTypeId + "|" + deviceType + "|" + operationCode;
+    public static String setOperationTemplateCacheKey(String deviceType, String subTypeId, String operationCode) {
+        return deviceType + "|" + subTypeId + "|" + operationCode;
+    }
+
+    /**
+     *
+     * @param subTypeId
+     * @param deviceType
+     * @return
+     */
+    public static String setOperationTemplateCacheKey(String deviceType, String subTypeId) {
+        return deviceType + "|" + subTypeId;
     }
 
     /**
@@ -70,8 +80,8 @@ public class OperationTemplateManagementUtil {
      */
     public static OperationTemplateCacheKey getOperationTemplateCacheKey(String key) {
         String[] keys = key.split("\\|");
-        String subTypeId = keys[0];;
-        String deviceType = keys[1];
+        String deviceType = keys[0];;
+        String subTypeId = keys[1];
         String operationCode = keys[2];
 
         OperationTemplateCacheKey operationTemplateCacheKey = new OperationTemplateCacheKey();
@@ -82,4 +92,22 @@ public class OperationTemplateManagementUtil {
         return operationTemplateCacheKey;
     }
 
+    /**
+     *
+     * @param key
+     * @return
+     */
+    public static OperationTemplateCacheKey getOperationTemplateCodeCacheKey(String key) {
+
+        String[] keys = key.split("\\|");
+        String deviceType = keys[0];;
+        String subTypeId = keys[1];
+
+        OperationTemplateCacheKey operationTemplateCacheKey = new OperationTemplateCacheKey();
+        operationTemplateCacheKey.setSubTypeId(subTypeId);
+        operationTemplateCacheKey.setDeviceType(deviceType);
+
+        return operationTemplateCacheKey;
+    }
+
 }
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/impl/OperationTemplateServiceImpl.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/impl/OperationTemplateServiceImpl.java
index 80fa1ea139..5bc0d1c238 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/impl/OperationTemplateServiceImpl.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/impl/OperationTemplateServiceImpl.java
@@ -22,6 +22,7 @@ import com.google.common.cache.CacheBuilder;
 import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import io.entgra.device.mgt.core.operation.template.cache.OperationTemplateCacheLoader;
+import io.entgra.device.mgt.core.operation.template.cache.OperationTemplateCodesCacheLoader;
 import io.entgra.device.mgt.core.operation.template.dao.OperationTemplateDAO;
 import io.entgra.device.mgt.core.operation.template.dao.OperationTemplateDAOFactory;
 import io.entgra.device.mgt.core.operation.template.dao.impl.util.OperationTemplateManagementUtil;
@@ -35,6 +36,9 @@ import io.entgra.device.mgt.core.operation.template.util.AssertUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 
@@ -46,6 +50,9 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
     private static final Log log = LogFactory.getLog(OperationTemplateServiceImpl.class);
     private static final LoadingCache<String, OperationTemplate> operationTemplateCache = CacheBuilder.newBuilder()
             .expireAfterWrite(15, TimeUnit.MINUTES).build(new OperationTemplateCacheLoader());
+
+    private static final LoadingCache<String, Set<String>> operationTemplateCodeCache = CacheBuilder.newBuilder()
+            .expireAfterWrite(15, TimeUnit.MINUTES).build(new OperationTemplateCodesCacheLoader());
     private final OperationTemplateDAO operationTemplateDAO;
 
     public OperationTemplateServiceImpl() {
@@ -67,10 +74,6 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
             operationTemplateDAO.addOperationTemplate(operationTemplate);
             ConnectionManagerUtils.commitDBTransaction();
 
-            String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
-                    operationTemplate.getSubTypeId(), operationTemplate.getDeviceType(), operationTemplate.getCode());
-            operationTemplateCache.put(key, operationTemplate);
-
             if (log.isDebugEnabled()) {
                 String msg = "Operation Template added successfully,for subtype id "
                         + operationTemplate.getSubTypeId() + " and operation code "
@@ -82,6 +85,61 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
             throw new OperationTemplateMgtPluginException(e.getMessage(), e);
         } finally {
             ConnectionManagerUtils.closeDBConnection();
+            addOperationTemplateDetailsForCacheLoader(operationTemplate);
+        }
+    }
+
+    public void addOperationTemplateDetailsForCacheLoader(OperationTemplate operationTemplate) {
+        try {
+            String operationTemplateKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
+                    operationTemplate.getDeviceType(), operationTemplate.getSubTypeId(), operationTemplate.getCode());
+            String operationTemplateCodeKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
+                    operationTemplate.getDeviceType(), operationTemplate.getSubTypeId());
+
+            operationTemplateCache.put(operationTemplateKey, operationTemplate);
+
+            Set<String> operationCodeList = operationTemplateCodeCache.get(operationTemplateCodeKey);
+            if (operationCodeList == null) {
+                operationCodeList = new HashSet<>();
+            }
+            operationCodeList.add(operationTemplate.getCode());
+            operationTemplateCodeCache.put(operationTemplateCodeKey, operationCodeList);
+        } catch (Exception e) {
+            log.error("Error occurred while adding operation template details for the cache loader", e);
+        }
+    }
+
+    public void deleteOperationTemplateDetailsFromCacheLoader(String deviceType, String subTypeId, String code) {
+        try {
+            String operationTemplateKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
+                    deviceType, subTypeId, code);
+            String operationTemplateCodeKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
+                    deviceType, subTypeId);
+
+            operationTemplateCache.invalidate(operationTemplateKey);
+            operationTemplateCodeCache.invalidate(operationTemplateCodeKey);
+        } catch (Exception e) {
+            log.error("Error occurred removing operation template details for the cache loader", e);
+        }
+    }
+
+    public void refreshOperationTemplateDetailsFromCacheLoader(OperationTemplate operationTemplate) {
+        try {
+            if (operationTemplate != null) {
+                String operationTemplateKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(operationTemplate.getDeviceType(),
+                        operationTemplate.getSubTypeId(), operationTemplate.getCode());
+                String operationTemplateCodeKey = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
+                        operationTemplate.getDeviceType(), operationTemplate.getSubTypeId());
+
+                operationTemplateCache.put(operationTemplateKey, operationTemplate);
+                Set<String> codeList = operationTemplateCodeCache.get(operationTemplateCodeKey);
+                codeList.remove(operationTemplate.getCode());
+                operationTemplateCodeCache.put(operationTemplateCodeKey, codeList);
+
+
+            }
+        } catch (ExecutionException e) {
+            log.error("Error occurred while updating operation template cache loader");
         }
     }
 
@@ -102,6 +160,7 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
             updatedOperationTemplate = operationTemplateDAO.updateOperationTemplate(
                     operationTemplate);
             ConnectionManagerUtils.commitDBTransaction();
+
             if (log.isDebugEnabled()) {
                 String msg = "Operation Template updated successfully,for subtype id "
                         + operationTemplate.getSubTypeId() + " and operation code " + operationTemplate.getCode()
@@ -114,11 +173,8 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
             throw new OperationTemplateMgtPluginException(e.getMessage(), e);
         } finally {
             ConnectionManagerUtils.closeDBConnection();
-
             if (updatedOperationTemplate != null) {
-                String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
-                        operationTemplate.getSubTypeId(), operationTemplate.getDeviceType(), operationTemplate.getCode());
-                operationTemplateCache.refresh(key);
+                refreshOperationTemplateDetailsFromCacheLoader(updatedOperationTemplate);
             }
         }
     }
@@ -131,12 +187,12 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
      * @throws OperationTemplateMgtPluginException
      */
     @Override
-    public OperationTemplate getOperationTemplate(String subTypeId, String deviceType, String operationCode)
+    public OperationTemplate getOperationTemplate(String deviceType, String subTypeId, String operationCode)
             throws OperationTemplateMgtPluginException {
         try {
 
             validateGetOperationTemplate(subTypeId, deviceType, operationCode);
-            String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(subTypeId, deviceType,
+            String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(deviceType, subTypeId,
                     operationCode);
             return operationTemplateCache.get(key);
         } catch (ExecutionException e) {
@@ -150,6 +206,27 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
         }
     }
 
+    /**
+     * @param deviceType
+     * @return
+     * @throws OperationTemplateMgtPluginException
+     */
+    @Override
+    public List<OperationTemplate> getAllOperationTemplates(String deviceType)
+            throws OperationTemplateMgtPluginException {
+        AssertUtils.hasText(deviceType, "Invalid device type.");
+        try {
+             ConnectionManagerUtils.openDBConnection();
+             return operationTemplateDAO.getAllOperationTemplates(deviceType);
+        } catch (DBConnectionException | OperationTemplateManagementDAOException e) {
+            log.error(e.getMessage());
+            throw new OperationTemplateMgtPluginException(e.getMessage(), e);
+        } finally {
+            ConnectionManagerUtils.closeDBConnection();
+
+        }
+    }
+
     /**
      * @param subTypeId
      * @param deviceType
@@ -157,17 +234,18 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
      * @throws OperationTemplateMgtPluginException
      */
     @Override
-    public void deleteOperationTemplate(String subTypeId, String deviceType, String operationCode)
+    public void deleteOperationTemplate(String deviceType, String subTypeId, String operationCode)
             throws OperationTemplateMgtPluginException {
 
         String msg = "Operation Template does not exist for subtype id : " + subTypeId
                 + " and device type : " + deviceType + " and operation code : "
                 + operationCode;
-        AssertUtils.isNull(getOperationTemplate(subTypeId, deviceType, operationCode), msg);
+        AssertUtils.isNull(getOperationTemplate(deviceType, subTypeId, operationCode), msg);
 
+        boolean isDelete = false;
         try {
             ConnectionManagerUtils.beginDBTransaction();
-            operationTemplateDAO.deleteOperationTemplate(subTypeId, deviceType, operationCode);
+            isDelete = operationTemplateDAO.deleteOperationTemplate(deviceType, subTypeId, operationCode);
             ConnectionManagerUtils.commitDBTransaction();
             if (log.isDebugEnabled()) {
                 String debugMsg = "Operation Template deleted successfully,for subtype id "
@@ -175,18 +253,46 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
                         + operationCode + "";
                 log.debug(debugMsg);
             }
-            String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(
-                    subTypeId, deviceType, operationCode);
-            operationTemplateCache.invalidate(key);
         } catch (DBConnectionException | OperationTemplateManagementDAOException e) {
             log.error(e.getMessage());
             throw new OperationTemplateMgtPluginException(e.getMessage(), e);
         } finally {
             ConnectionManagerUtils.closeDBConnection();
+            if (isDelete) {
+                deleteOperationTemplateDetailsFromCacheLoader(deviceType, subTypeId, operationCode);
+            }
 
         }
     }
 
+    /**
+     * @param deviceType
+     * @param subTypeId
+     * @return
+     * @throws OperationTemplateMgtPluginException
+     */
+    @Override
+    public Set<String> getOperationTemplateCodes(String deviceType, String subTypeId)
+            throws OperationTemplateMgtPluginException  {
+
+        try {
+            AssertUtils.hasText(subTypeId, "Invalid meter device subtype id: " + subTypeId);
+            AssertUtils.isTrue(Integer.valueOf(subTypeId)>0, "Invalid meter device subtype id: " + subTypeId);
+            AssertUtils.hasText(deviceType, "Invalid device type.");
+
+            String key = OperationTemplateManagementUtil.setOperationTemplateCacheKey(deviceType, subTypeId);
+            return operationTemplateCodeCache.get(key);
+        } catch (ExecutionException e) {
+            log.error(e.getMessage());
+            throw new OperationTemplateMgtPluginException(e.getMessage(), e);
+        } catch (CacheLoader.InvalidCacheLoadException e) {
+            String msg = "Operation Template codes doesn't exist for subtype id : " + subTypeId + " and device type : "
+                    + deviceType;
+            log.error(msg, e);
+            return null;
+        }
+    }
+
     /**
      *
      * @param subTypeId
@@ -216,7 +322,7 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
         String msg = "Operation Template already exist for subtype id : " + operationTemplate.getSubTypeId()
                 + " and device type : " + operationTemplate.getDeviceType() + " and operation code : "
                 + operationTemplate.getCode();
-        AssertUtils.notNull(getOperationTemplate(operationTemplate.getSubTypeId(), operationTemplate.getDeviceType(),
+        AssertUtils.notNull(getOperationTemplate(operationTemplate.getDeviceType(), operationTemplate.getSubTypeId(),
                 operationTemplate.getCode()), msg);
     }
 
@@ -232,7 +338,7 @@ public class OperationTemplateServiceImpl implements OperationTemplateService {
         String msg = "Operation Template does not exist for subtype id : " + operationTemplate.getSubTypeId()
                 + " and device type : " + operationTemplate.getDeviceType() + " and operation code : "
                 + operationTemplate.getCode();
-        AssertUtils.isNull(getOperationTemplate(operationTemplate.getSubTypeId(), operationTemplate.getDeviceType(),
+        AssertUtils.isNull(getOperationTemplate(operationTemplate.getDeviceType(), operationTemplate.getSubTypeId(),
                 operationTemplate.getCode()), msg);
     }
 
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/spi/OperationTemplateService.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/spi/OperationTemplateService.java
index 659509b34b..cb249d0298 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/spi/OperationTemplateService.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/spi/OperationTemplateService.java
@@ -21,6 +21,9 @@ package io.entgra.device.mgt.core.operation.template.spi;
 import io.entgra.device.mgt.core.operation.template.dto.OperationTemplate;
 import io.entgra.device.mgt.core.operation.template.exception.OperationTemplateMgtPluginException;
 
+import java.util.List;
+import java.util.Set;
+
 /**
  * Operation Template service interface.
  */
@@ -30,8 +33,11 @@ public interface OperationTemplateService {
 
     OperationTemplate updateOperationTemplate(OperationTemplate operationTemplate) throws OperationTemplateMgtPluginException;
 
-    OperationTemplate getOperationTemplate(String subTypeId, String deviceType, String operationCode) throws OperationTemplateMgtPluginException;
+    OperationTemplate getOperationTemplate(String deviceType, String subTypeId, String operationCode) throws OperationTemplateMgtPluginException;
+
+    List<OperationTemplate> getAllOperationTemplates(String deviceType) throws OperationTemplateMgtPluginException;
 
-    void deleteOperationTemplate(String subTypeId, String deviceType, String operationCode) throws OperationTemplateMgtPluginException;
+    void deleteOperationTemplate(String deviceType, String subTypeId, String operationCode) throws OperationTemplateMgtPluginException;
 
+    Set<String> getOperationTemplateCodes(String deviceType, String subTypeId) throws OperationTemplateMgtPluginException;
 }
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/util/DAOUtil.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/util/DAOUtil.java
index 18edcf7c8c..9953fad0b0 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/util/DAOUtil.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/main/java/io/entgra/device/mgt/core/operation/template/util/DAOUtil.java
@@ -44,7 +44,6 @@ public class DAOUtil {
     public static OperationTemplate loadOperationTemplate(ResultSet rs)
         throws SQLException, JsonSyntaxException {
         OperationTemplate operationTemplate = new OperationTemplate();
-        Gson g = new Gson();
         operationTemplate.setSubTypeId(rs.getString("SUB_TYPE_ID"));
         operationTemplate.setCode(rs.getString("OPERATION_CODE"));
         operationTemplate.setDeviceType(rs.getString("DEVICE_TYPE"));
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/DAOTest.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/DAOTest.java
index c993cc435e..6074ad2a3c 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/DAOTest.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/DAOTest.java
@@ -49,7 +49,7 @@ public class DAOTest extends BaseOperationTemplatePluginTest {
 
         ConnectionManagerUtils.openDBConnection();
         OperationTemplate operationTemplateActual = operationTemplateDAO.getOperationTemplate(
-                "4", TestUtils.deviceType, TestUtils.operationCode);
+                 TestUtils.deviceType, "4", TestUtils.operationCode);
         ConnectionManagerUtils.closeDBConnection();
         Assert.assertNotNull(operationTemplateActual, "Cannot be null");
         Assert.assertEquals(operationTemplateActual.getSubTypeId(), "4");
@@ -73,7 +73,7 @@ public class DAOTest extends BaseOperationTemplatePluginTest {
         ConnectionManagerUtils.commitDBTransaction();
 
         OperationTemplate operationTemplateActual = operationTemplateDAO.getOperationTemplate(
-                "4", TestUtils.deviceType, TestUtils.operationCode);
+                TestUtils.deviceType, "4", TestUtils.operationCode);
         ConnectionManagerUtils.closeDBConnection();
         Assert.assertNotNull(operationTemplateActual, "Cannot be null");
         Assert.assertEquals(operationTemplateActual.getSubTypeId(), "4");
@@ -87,7 +87,7 @@ public class DAOTest extends BaseOperationTemplatePluginTest {
 
         ConnectionManagerUtils.beginDBTransaction();
         OperationTemplate operationTemplate = operationTemplateDAO.getOperationTemplate(
-                "4", TestUtils.deviceType, TestUtils.operationCode);
+                TestUtils.deviceType, "4", TestUtils.operationCode);
         OperationTemplate operationTemplateActual = operationTemplateDAO.updateOperationTemplate(
                 operationTemplate);
         ConnectionManagerUtils.commitDBTransaction();
diff --git a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/ServiceTest.java b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/ServiceTest.java
index e47fd7c1dd..6c439ef013 100644
--- a/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/ServiceTest.java
+++ b/components/operation-template-mgt/io.entgra.device.mgt.core.operation.template/src/test/java/io/entgra/device/mgt/core/operation/template/ServiceTest.java
@@ -29,6 +29,9 @@ import org.testng.Assert;
 import org.testng.annotations.BeforeClass;
 import org.testng.annotations.Test;
 
+import java.util.List;
+import java.util.Set;
+
 public class ServiceTest extends BaseOperationTemplatePluginTest {
 
     private static final Log log = LogFactory.getLog(ServiceTest.class);
@@ -43,7 +46,8 @@ public class ServiceTest extends BaseOperationTemplatePluginTest {
     @Test(dependsOnMethods = "testAddOperationTemplate")
     public void testGetOperationTemplate() throws OperationTemplateMgtPluginException {
 
-        OperationTemplate operationTemplateActual = operationTemplateService.getOperationTemplate(TestUtils.subtypeId, TestUtils.deviceType, TestUtils.operationCode);
+        OperationTemplate operationTemplateActual = operationTemplateService.getOperationTemplate(
+                TestUtils.deviceType, TestUtils.subtypeId, TestUtils.operationCode);
         Assert.assertEquals(operationTemplateActual.getSubTypeId(), operationTemplateActual.getSubTypeId());
         Assert.assertEquals(operationTemplateActual.getCode(), TestUtils.operationCode);
         Assert.assertEquals(operationTemplateActual.getDeviceType(), TestUtils.deviceType);
@@ -59,7 +63,7 @@ public class ServiceTest extends BaseOperationTemplatePluginTest {
         operationTemplate.setOperationDefinition(TestUtils.getOperationDefinition(TestUtils.subtypeId, TestUtils.operationCode));
         operationTemplateService.addOperationTemplate(operationTemplate);
 
-        OperationTemplate operationTemplateActual = operationTemplateService.getOperationTemplate(TestUtils.subtypeId, TestUtils.deviceType, TestUtils.operationCode);
+        OperationTemplate operationTemplateActual = operationTemplateService.getOperationTemplate(TestUtils.deviceType, TestUtils.subtypeId, TestUtils.operationCode);
         Assert.assertNotNull(operationTemplateActual, "Cannot be null");
         Assert.assertEquals(operationTemplateActual.getOperationDefinition(), TestUtils.getOperationDefinition(TestUtils.subtypeId, TestUtils.operationCode));
         Assert.assertEquals(operationTemplateActual.getSubTypeId(), operationTemplateActual.getSubTypeId());
@@ -70,7 +74,7 @@ public class ServiceTest extends BaseOperationTemplatePluginTest {
     @Test(dependsOnMethods = "testAddOperationTemplate")
     public void testUpdateOperationTemplate() throws OperationTemplateMgtPluginException {
 
-        OperationTemplate operationTemplate = operationTemplateService.getOperationTemplate(TestUtils.subtypeId, TestUtils.deviceType, TestUtils.operationCode);
+        OperationTemplate operationTemplate = operationTemplateService.getOperationTemplate(TestUtils.deviceType, TestUtils.subtypeId, TestUtils.operationCode);
         operationTemplate.setOperationDefinition("{}");
         OperationTemplate operationTemplateActual = operationTemplateService.updateOperationTemplate(operationTemplate);
 
@@ -81,13 +85,30 @@ public class ServiceTest extends BaseOperationTemplatePluginTest {
         Assert.assertEquals(operationTemplateActual.getDeviceType(), TestUtils.deviceType);
     }
 
-    @Test(dependsOnMethods = {"testAddOperationTemplate", "testGetOperationTemplate", "testUpdateOperationTemplate"})
-    public void testDeleteOperationTemplate() throws OperationTemplateMgtPluginException {
-        operationTemplateService.deleteOperationTemplate(TestUtils.subtypeId, TestUtils.deviceType, TestUtils.operationCode);
-        Assert.assertNull(getOperationTemplateBySubtypeIdAndDeviceTypeAndOperationCode(TestUtils.subtypeId, TestUtils.deviceType, TestUtils.operationCode));
+
+    public OperationTemplate getOperationTemplateBySubtypeIdAndDeviceTypeAndOperationCode(String deviceType, String subtypeId, String operationCode) throws OperationTemplateMgtPluginException {
+        return operationTemplateService.getOperationTemplate(deviceType, subtypeId, operationCode);
+    }
+
+    @Test(dependsOnMethods = "testAddOperationTemplate")
+    public void testGetOperationTemplateCodesByDeviceTypeAndSubTypeId() throws OperationTemplateMgtPluginException {
+
+        Set<String> operationCodes = operationTemplateService.getOperationTemplateCodes(TestUtils.deviceType, TestUtils.subtypeId);
+        Assert.assertNotNull(operationCodes, "Cannot be null");
+    }
+
+    @Test(dependsOnMethods = "testAddOperationTemplate")
+    public void testGetAllOperationTemplatesByDeviceType() throws OperationTemplateMgtPluginException {
+
+        List<OperationTemplate> operationTemplates = operationTemplateService.getAllOperationTemplates(TestUtils.deviceType);
+        Assert.assertNotNull(operationTemplates, "Cannot be null");
+        Assert.assertFalse(operationTemplates.isEmpty(), "operationTemplates is empty");
     }
 
-    public OperationTemplate getOperationTemplateBySubtypeIdAndDeviceTypeAndOperationCode(String subtypeId, String deviceType, String operationCode) throws OperationTemplateMgtPluginException {
-        return operationTemplateService.getOperationTemplate(subtypeId, deviceType, operationCode);
+    @Test(dependsOnMethods = {"testAddOperationTemplate", "testGetOperationTemplate", "testUpdateOperationTemplate",
+            "testGetOperationTemplateCodesByDeviceTypeAndSubTypeId", "testGetAllOperationTemplatesByDeviceType"})
+    public void testDeleteOperationTemplate() throws OperationTemplateMgtPluginException {
+        operationTemplateService.deleteOperationTemplate(TestUtils.deviceType, TestUtils.subtypeId, TestUtils.operationCode);
+        Assert.assertNull(getOperationTemplateBySubtypeIdAndDeviceTypeAndOperationCode(TestUtils.deviceType, TestUtils.subtypeId, TestUtils.operationCode));
     }
 }
diff --git a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/impl/DeviceSubTypeDAOImpl.java b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/impl/DeviceSubTypeDAOImpl.java
index ecfc1fbcc4..6cc2c7cac7 100644
--- a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/impl/DeviceSubTypeDAOImpl.java
+++ b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/impl/DeviceSubTypeDAOImpl.java
@@ -18,12 +18,12 @@
 
 package io.entgra.device.mgt.core.subtype.mgt.dao.impl;
 
-import io.entgra.device.mgt.core.subtype.mgt.exception.DBConnectionException;
-import io.entgra.device.mgt.core.subtype.mgt.exception.SubTypeMgtDAOException;
 import io.entgra.device.mgt.core.subtype.mgt.dao.DeviceSubTypeDAO;
 import io.entgra.device.mgt.core.subtype.mgt.dao.util.ConnectionManagerUtil;
-import io.entgra.device.mgt.core.subtype.mgt.dto.DeviceSubType;
 import io.entgra.device.mgt.core.subtype.mgt.dao.util.DAOUtil;
+import io.entgra.device.mgt.core.subtype.mgt.dto.DeviceSubType;
+import io.entgra.device.mgt.core.subtype.mgt.exception.DBConnectionException;
+import io.entgra.device.mgt.core.subtype.mgt.exception.SubTypeMgtDAOException;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
@@ -101,7 +101,9 @@ public class DeviceSubTypeDAOImpl implements DeviceSubTypeDAO {
     public DeviceSubType getDeviceSubType(String subTypeId, int tenantId, String deviceType)
             throws SubTypeMgtDAOException {
         try {
-            String sql = "SELECT * FROM DM_DEVICE_SUB_TYPE WHERE SUB_TYPE_ID = ? AND TENANT_ID = ? AND DEVICE_TYPE = ?";
+            String sql = "SELECT s.*, o.OPERATION_CODE  FROM DM_DEVICE_SUB_TYPE s " +
+                    "LEFT JOIN SUB_OPERATION_TEMPLATE o on s.SUB_TYPE_ID = o.SUB_TYPE_ID " +
+                    "WHERE s.SUB_TYPE_ID = ? AND s.TENANT_ID = ? AND s.DEVICE_TYPE = ?";
 
             Connection conn = ConnectionManagerUtil.getDBConnection();
             try (PreparedStatement stmt = conn.prepareStatement(sql)) {
@@ -109,10 +111,8 @@ public class DeviceSubTypeDAOImpl implements DeviceSubTypeDAO {
                 stmt.setInt(2, tenantId);
                 stmt.setString(3, deviceType);
                 try (ResultSet rs = stmt.executeQuery()) {
-                    if (rs.next()) {
-                        return DAOUtil.loadDeviceSubType(rs);
-                    }
-                    return null;
+                    List<DeviceSubType> deviceSubTypes = DAOUtil.loadDeviceSubTypes(rs);
+                    return (deviceSubTypes != null && !deviceSubTypes.isEmpty()) ? deviceSubTypes.get(0) : null;
                 }
             }
 
@@ -133,18 +133,20 @@ public class DeviceSubTypeDAOImpl implements DeviceSubTypeDAO {
     public List<DeviceSubType> getAllDeviceSubTypes(int tenantId, String deviceType)
             throws SubTypeMgtDAOException {
         try {
-            String sql = "SELECT * FROM DM_DEVICE_SUB_TYPE WHERE TENANT_ID = ? AND DEVICE_TYPE = ? ORDER BY " +
-                    "SUB_TYPE_ID";
+            String sql = "SELECT s.*, o.OPERATION_CODE FROM DM_DEVICE_SUB_TYPE s " +
+                    "LEFT JOIN SUB_OPERATION_TEMPLATE o on s.SUB_TYPE_ID = o.SUB_TYPE_ID AND s.DEVICE_TYPE  = o.DEVICE_TYPE " +
+                    "WHERE s.TENANT_ID = ? AND s.DEVICE_TYPE = ? ORDER BY " +
+                    "s.SUB_TYPE_ID";
 
             Connection conn = ConnectionManagerUtil.getDBConnection();
             try (PreparedStatement stmt = conn.prepareStatement(sql)) {
                 stmt.setInt(1, tenantId);
                 stmt.setString(2, deviceType);
                 try (ResultSet rs = stmt.executeQuery()) {
-                    return DAOUtil.loadDeviceSubTypes(rs);
+                    List<DeviceSubType> deviceSubTypes = DAOUtil.loadDeviceSubTypes(rs);
+                    return deviceSubTypes;
                 }
             }
-
         } catch (DBConnectionException e) {
             String msg = "Error occurred while obtaining DB connection to retrieve all device sub types for " +
                     deviceType + " subtypes";
diff --git a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/util/DAOUtil.java b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/util/DAOUtil.java
index 34e108a4a6..f4569c6c36 100644
--- a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/util/DAOUtil.java
+++ b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dao/util/DAOUtil.java
@@ -20,11 +20,12 @@ package io.entgra.device.mgt.core.subtype.mgt.dao.util;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import io.entgra.device.mgt.core.subtype.mgt.dto.DeviceSubType;
-
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 
 public class DAOUtil {
 
@@ -49,10 +50,35 @@ public class DAOUtil {
     }
 
     public static List<DeviceSubType> loadDeviceSubTypes(ResultSet rs) throws SQLException {
-        List<DeviceSubType> deviceSubTypes = new ArrayList<>();
-        while (rs.next()) {
-            deviceSubTypes.add(loadDeviceSubType(rs));
+        try {
+            Map<String, DeviceSubType> deviceSubTypes = new LinkedHashMap<>();
+            DeviceSubType deviceSubType = new DeviceSubType() {
+                @Override
+                public <T> DeviceSubType convertToDeviceSubType() {
+                    return null;
+                }
+
+                @Override
+                public String parseSubTypeToJson() throws JsonProcessingException {
+                    return null;
+                }
+            };
+            while (rs.next()) {
+                String currentSubTypeId = rs.getString("SUB_TYPE_ID");
+                String deviceType = rs.getString("DEVICE_TYPE");
+                String operationCode = rs.getString("OPERATION_CODE");
+                String key = deviceType + "|" + currentSubTypeId;
+                if (!deviceSubTypes.containsKey(key)) {
+                    deviceSubType = loadDeviceSubType(rs);
+                }
+                if (operationCode != null) {
+                    deviceSubType.addOperationCode(operationCode);
+                }
+                deviceSubTypes.put(key, deviceSubType);
+            }
+            return new ArrayList<>(deviceSubTypes.values());
+        } catch (Exception e) {
+            return null;
         }
-        return deviceSubTypes;
     }
 }
diff --git a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dto/DeviceSubType.java b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dto/DeviceSubType.java
index 84eaa124c6..cc27bb592e 100644
--- a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dto/DeviceSubType.java
+++ b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/main/java/io/entgra/device/mgt/core/subtype/mgt/dto/DeviceSubType.java
@@ -21,6 +21,9 @@ package io.entgra.device.mgt.core.subtype.mgt.dto;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 
+import java.util.HashSet;
+import java.util.Set;
+
 
 public abstract class DeviceSubType {
 
@@ -29,16 +32,22 @@ public abstract class DeviceSubType {
     private String deviceType;
     private String subTypeName;
     private String typeDefinition;
-
+    private Set<String> operationCodes = new HashSet<>();
     public DeviceSubType() {
     }
 
-    public DeviceSubType(String subTypeId, int tenantId, String deviceType, String subTypeName, String typeDefinition) {
+    public DeviceSubType(String subTypeId, int tenantId, String deviceType, String subTypeName, String typeDefinition,
+                         Set<String> operationCodes) {
         this.subTypeId = subTypeId;
         this.tenantId = tenantId;
         this.deviceType = deviceType;
         this.subTypeName = subTypeName;
         this.typeDefinition = typeDefinition;
+        if (operationCodes != null || !operationCodes.isEmpty()) {
+            this.operationCodes.addAll(operationCodes);
+        }
+
+
     }
 
     public String getSubTypeId() {
@@ -85,4 +94,10 @@ public abstract class DeviceSubType {
 
     public abstract String parseSubTypeToJson() throws JsonProcessingException;
 
+    public void addOperationCode(String code) {
+        operationCodes.add(code);
+    }
+    public Set<String> getOperationCodes() {
+        return operationCodes;
+    }
 }
diff --git a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/java/io/entgra/device/mgt/core/subtype/mgt/ServiceTest.java b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/java/io/entgra/device/mgt/core/subtype/mgt/ServiceTest.java
index 8d800a2c69..a11d7a42d3 100644
--- a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/java/io/entgra/device/mgt/core/subtype/mgt/ServiceTest.java
+++ b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/java/io/entgra/device/mgt/core/subtype/mgt/ServiceTest.java
@@ -125,4 +125,19 @@ public class ServiceTest extends BaseDeviceSubTypePluginTest {
         int subTypeCount = deviceSubTypeService.getDeviceSubTypeCount(deviceType);
         log.info(deviceType + " Device subtypes count: " + subTypeCount);
     }
+
+    @Test
+    public void testGetMeterDeviceType() throws SubTypeMgtPluginException {
+        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+        DeviceSubType subTypeActual = deviceSubTypeService.getDeviceSubType("7", tenantId,
+                "METER");
+        Assert.assertNotNull(subTypeActual);
+    }
+
+    @Test
+    public void testGetAllMeterDeviceTypes() throws SubTypeMgtPluginException {
+        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+        List<DeviceSubType> subTypeActual = deviceSubTypeService.getAllDeviceSubTypes(tenantId, "METER");
+        Assert.assertNotNull(subTypeActual);
+    }
 }
diff --git a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/resources/carbon-home/dbscripts/h2.sql b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/resources/carbon-home/dbscripts/h2.sql
index f77830c7ed..f3f22f381c 100644
--- a/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/resources/carbon-home/dbscripts/h2.sql
+++ b/components/subtype-mgt/io.entgra.device.mgt.core.subtype.mgt/src/test/resources/carbon-home/dbscripts/h2.sql
@@ -26,7 +26,19 @@
    `TYPE_DEFINITION` TEXT NOT NULL,
     PRIMARY KEY (`SUB_TYPE_ID`,`DEVICE_TYPE`)
  );
-
+-- SUB_OPERATION_TEMPLATE TABLE--
+CREATE TABLE SUB_OPERATION_TEMPLATE (
+  SUB_OPERATION_TEMPLATE_ID int NOT NULL AUTO_INCREMENT,
+  OPERATION_DEFINITION TEXT NOT NULL,
+  OPERATION_CODE varchar(100) NOT NULL,
+  SUB_TYPE_ID int NOT NULL,
+  DEVICE_TYPE VARCHAR(25) NOT NULL,
+  CREATE_TIMESTAMP timestamp NULL DEFAULT NULL,
+  UPDATE_TIMESTAMP timestamp NULL DEFAULT NULL,
+  PRIMARY KEY (SUB_OPERATION_TEMPLATE_ID),
+  UNIQUE KEY SUB_OPERATION_TEMPLATE (SUB_TYPE_ID,OPERATION_CODE, DEVICE_TYPE),
+  CONSTRAINT fk_SUB_OPERATION_TEMPLATE_DM_DEVICE_SUB_TYPE FOREIGN KEY (SUB_TYPE_ID, DEVICE_TYPE) REFERENCES DM_DEVICE_SUB_TYPE (SUB_TYPE_ID, DEVICE_TYPE)
+);
 -- -----------------------------------------------------
 -- Sample data for test cases
 -- -----------------------------------------------------
@@ -35,3 +47,898 @@ INSERT INTO DM_DEVICE_SUB_TYPE (SUB_TYPE_ID, TENANT_ID, DEVICE_TYPE, SUB_TYPE_NA
 (3,-1234,'Meter','TestSubType','{"make": "TestSubType", "model": "ATx-Mega SIM800", "subTypeId": 3, "hasSMSSupport": true, "hasICMPSupport": true, "socketServerPort": 8071}'),
 (4,-1234,'Meter','TestSubType','{"make": "TestSubType", "model": "ATx-Mega SIM800", "subTypeId": 4, "hasSMSSupport": true, "hasICMPSupport": true, "socketServerPort": 8071}');
 
+INSERT INTO DM_DEVICE_SUB_TYPE (SUB_TYPE_ID, TENANT_ID, DEVICE_TYPE, SUB_TYPE_NAME, TYPE_DEFINITION) VALUES (
+'5', -1234, 'METER','Microstar - IEC Bulk',
+'{
+    "compatibleComModules": {
+      "4": {
+        "subTypeId": 4,
+        "make": "Microstar",
+        "model": "IEC-GSM",
+        "socketServerPort": 5258,
+        "hasICMPSupport": true,
+        "hasSMSSupport": false,
+        "hasNMDSupport":false,
+        "tenantId": -1234
+      }
+    },
+    "compatibleComModulesIds": [4],
+    "supportedOperations": [
+      "BILLING_REGISTERS_RETRIEVE",
+      "TIME_SYNC",
+      "SELF_TEST",
+      "LOAD_PROFILE_RETRIEVE"
+    ],
+    "defaultRegisters": {
+      "METER_ID": "1-0:0.0.0()",
+      "METER_FW_VER": "1-0:0.2.0()",
+      "TIME": "1-0:0.9.1()",
+      "DATE": "1-0:0.9.2()"
+    },
+    "userClientMapping": {
+      "0": 0,
+      "1": 1,
+      "2": 2
+    },
+    "make": "MicroStar",
+    "model": "IEC Bulk",
+    "serverAddress": 0,
+    "defaultClientAddress": 0,
+    "registerMapping": {
+      "0.0.0_0": {
+        "obis": "1-0:0.0.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_71.7.0": {
+        "obis": "1-1:71.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "LP": {
+        "obis": "P.01",
+        "attributeIndex": -1,
+        "classId": -1,
+        "isProfileRegister": true
+      },
+      "LP_3.8.0": {
+        "obis": "1-1:3.8.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_63.7.0": {
+        "obis": "1-1:73.7.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.2_0": {
+        "obis": "1-1:1.8.2()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.0*01_0": {
+        "obis": "1-1:2.8.0*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.2*01_0": {
+        "obis": "1-1:1.8.2*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_72.7.0": {
+        "obis": "1-1:72.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "2.8.1_0": {
+        "obis": "1-1:2.8.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.9.2_0": {
+        "obis": "1-0:0.9.2()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "31.7.0_0": {
+        "obis": "1-1:31.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.3_0": {
+        "obis": "1-1:2.8.3()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "51.7.0_0": {
+        "obis": "1-1:51.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.0_0": {
+        "obis": "1-1:1.8.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "10.6.0*01_0": {
+        "obis": "1-1:10.6.0*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "71.7.0_0": {
+        "obis": "1-1:71.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.2*01_0": {
+        "obis": "1-1:2.8.2*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "72.7.0_0": {
+        "obis": "1-1:72.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_9.5.0": {
+        "obis": "1-1:9.4.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "52.7.0_0": {
+        "obis": "1-1:52.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_13.7.0": {
+        "obis": "1-1:13.7.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_31.7.0": {
+        "obis": "1-1:31.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "0.4.3_0": {
+        "obis": "1-0:0.4.3()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.4.5_0": {
+        "obis": "1-0:0.4.5()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.3*01_0": {
+        "obis": "1-1:1.8.3*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "32.7.0_0": {
+        "obis": "1-1:32.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.0*01_0": {
+        "obis": "1-1:1.8.0*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_32.7.0": {
+        "obis": "1-1:32.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "LP_2.5.0": {
+        "obis": "1-1:2.4.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "10.6.0_0": {
+        "obis": "1-1:10.6.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.3*01_0": {
+        "obis": "1-1:2.8.3*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.3_0": {
+        "obis": "1-1:1.8.3()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_33.7.0": {
+        "obis": "1-1:33.7.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.9.1_0": {
+        "obis": "1-0:0.9.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.0_0": {
+        "obis": "1-1:2.8.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_1.5.0": {
+        "obis": "1-1:1.4.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.2_0": {
+        "obis": "1-1:2.8.2()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.1_0": {
+        "obis": "1-1:1.8.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_51.7.0": {
+        "obis": "1-1:51.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "LP_43.7.0": {
+        "obis": "1-1:53.7.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.1*01_0": {
+        "obis": "1-1:1.8.1*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "9.6.0_0": {
+        "obis": "1-1:9.6.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_52.7.0": {
+        "obis": "1-1:52.7.0",
+        "attributeIndex": -1,
+        "classId": -1,
+        "scalingOption": "CUSTOM",
+        "scalar": 1000.0
+      },
+      "14.7.0_0": {
+        "obis": "1-1:14.7.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "9.6.0*01_0": {
+        "obis": "1-1:9.6.0*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_1.8.0": {
+        "obis": "1-1:1.8.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.4.6_0": {
+        "obis": "1-0:0.4.6()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.1*01_0": {
+        "obis": "1-1:2.8.1*1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_10.5.0": {
+        "obis": "1-1:10.4.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.4.2_0": {
+        "obis": "1-0:0.4.2()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_15.4.0": {
+        "obis": "1-1:15.4.0",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "FW_VER": {
+        "obis": "1-0:0.2.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_2.8.0": {
+        "obis": "1-1:2.8.0",
+        "attributeIndex": -1,
+        "classId": -1
+      }
+    },
+    "transportProtocol": "IEC",
+    "defaultComModuleId": 4,
+    "defaultComModule": {
+      "subTypeId": 4,
+      "make": "Microstar",
+      "model": "IEC-GSM",
+      "socketServerPort": 5258,
+      "hasICMPSupport": true,
+      "hasSMSSupport": false,
+      "hasNMDSupport":false,
+      "tenantId": -1234
+    }
+  }'
+);
+
+INSERT INTO DM_DEVICE_SUB_TYPE (SUB_TYPE_ID, TENANT_ID, DEVICE_TYPE, SUB_TYPE_NAME, TYPE_DEFINITION) VALUES (
+'6', -1234, 'METER', 'Anteleco - IEC 3Phase',
+'{
+     "compatibleComModules": {
+      "1": {
+        "subTypeId": 1,
+        "make": "AnteLeco",
+        "model": "ATx-Mega SIM800",
+        "socketServerPort": 8071,
+        "hasICMPSupport": true,
+        "hasSMSSupport": true,
+        "hasNMDSupport":false,
+        "tenantId": -1234
+      },
+      "8": {
+        "subTypeId": 8,
+        "make": "AnteLeco",
+        "model": "NB-IoT B",
+        "socketServerPort": 8071,
+        "hasICMPSupport": true,
+        "hasSMSSupport": true,
+        "hasNMDSupport":false,
+        "tenantId": -1234
+      },
+      "10": {
+        "subTypeId": 10,
+        "make": "AnteLeco",
+        "model": "ATx-Mega SIM800 B",
+        "socketServerPort": 8071,
+        "hasICMPSupport": true,
+        "hasSMSSupport": true,
+        "hasNMDSupport":false,
+        "tenantId": -1234
+            }
+    },
+    "compatibleComModulesIds": [1,8,10],
+    "supportedOperations": [
+      "BILLING_REGISTERS_RETRIEVE",
+      "REMOTE_RELAY_ON",
+      "REMOTE_RELAY_OFF",
+      "TIME_SYNC",
+      "SELF_TEST",
+      "LOAD_PROFILE_RETRIEVE"
+    ],
+    "defaultRegisters": {
+      "METER_ID": "0.0.96.1.0.255()",
+      "METER_FW_VER": "1.0.0.2.0.255()",
+      "TIME": "1.0.0.9.1()",
+      "DATE": "1.0.0.9.2()"
+    },
+    "userClientMapping": {
+      "0": 0,
+      "1": 1,
+      "2": 2
+    },
+    "make": "Anteleco",
+    "model": "IEC 3Phase",
+    "serverAddress": 0,
+    "defaultClientAddress": 0,
+    "registerMapping": {
+      "0.0.0_0": {
+        "obis": "0.0.96.1.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_71.7.0": {
+        "obis": "71.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP": {
+        "obis": "P.01",
+        "attributeIndex": -1,
+        "classId": -1,
+        "isProfileRegister": true
+      },
+      "CSRQ_RL": {
+        "obis": "0.0.96.128.1.0()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_3.8.0": {
+        "obis": "3.8",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.3*01_0": {
+        "obis": "1.0.2.8.3.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.3_0": {
+        "obis": "1.0.1.8.3.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_63.7.0": {
+        "obis": "63.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.2_0": {
+        "obis": "1.0.1.8.2.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_33.7.0": {
+        "obis": "33.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.9.1_0": {
+        "obis": "1.0.0.9.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.0*01_0": {
+        "obis": "1.0.2.8.0.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.0_0": {
+        "obis": "1.0.2.8.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.2*01_0": {
+        "obis": "1.0.1.8.2.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_72.7.0": {
+        "obis": "72.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_1.5.0": {
+        "obis": "1.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.2_0": {
+        "obis": "1.0.2.8.2.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.1_0": {
+        "obis": "1.0.2.8.1.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "0.9.2_0": {
+        "obis": "1.0.0.9.2()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "31.7.0_0": {
+        "obis": "1.0.31.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.3_0": {
+        "obis": "1.0.2.8.3.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "51.7.0_0": {
+        "obis": "1.0.51.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.1_0": {
+        "obis": "1.0.1.8.1.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.0_0": {
+        "obis": "1.0.1.8.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_51.7.0": {
+        "obis": "51.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_43.7.0": {
+        "obis": "43.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "71.7.0_0": {
+        "obis": "1.0.71.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_4.8.0": {
+        "obis": "4.8",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.1*01_0": {
+        "obis": "1.0.1.8.1.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.2*01_0": {
+        "obis": "1.0.2.8.2.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "72.7.0_0": {
+        "obis": "1.0.72.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_52.7.0": {
+        "obis": "52.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "14.7.0_0": {
+        "obis": "1.0.14.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_9.5.0": {
+        "obis": "9.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_13.5.0": {
+        "obis": "13.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "52.7.0_0": {
+        "obis": "1.0.52.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_31.7.0": {
+        "obis": "31.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_1.8.0": {
+        "obis": "1.8",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.3*01_0": {
+        "obis": "1.0.1.8.3.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "32.7.0_0": {
+        "obis": "1.0.32.7.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "1.8.0*01_0": {
+        "obis": "1.0.1.8.0.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "2.8.1*01_0": {
+        "obis": "1.0.2.8.1.1()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_10.5.0": {
+        "obis": "10.5",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_32.7.0": {
+        "obis": "32.7",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "FW_VER": {
+        "obis": "1.0.0.2.0.255()",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_2.8.0": {
+        "obis": "2.8",
+        "attributeIndex": -1,
+        "classId": -1
+      },
+      "LP_2.5.0": {
+        "obis": "2.5",
+        "attributeIndex": -1,
+        "classId": -1
+      }
+    },
+    "transportProtocol": "IEC",
+    "defaultComModuleId": 10,
+    "defaultComModule": {
+      "subTypeId": 10,
+      "make": "AnteLeco",
+      "model": "ATx-Mega SIM800 B",
+      "socketServerPort": 8071,
+      "hasICMPSupport": true,
+      "hasSMSSupport": true,
+      "hasNMDSupport":false,
+      "tenantId": -1234
+    }
+  }'
+);
+
+INSERT INTO DM_DEVICE_SUB_TYPE (SUB_TYPE_ID, TENANT_ID, DEVICE_TYPE, SUB_TYPE_NAME, TYPE_DEFINITION) VALUES (
+'7', -1234, 'METER', 'Anteleco - NMD',
+'{
+    "compatibleComModules": {
+      "5": {
+        "subTypeId": 5,
+        "make": "AnteLeco",
+        "model": "STM32 M65-NMD",
+        "socketServerPort": 8071,
+        "hasICMPSupport": true,
+        "hasSMSSupport": true,
+        "hasNMDSupport":true,
+        "tenantId": -1234
+      },
+       "9": {
+        "subTypeId": 9,
+        "make": "AnteLeco",
+        "model": "NB-IoT NMD",
+        "socketServerPort": 8071,
+        "hasICMPSupport": true,
+        "hasSMSSupport": true,
+        "hasNMDSupport":true,
+        "tenantId": -1234
+            }
+    },
+    "compatibleComModulesIds": [5,9],
+    "supportedOperations": [
+      "BILLING_REGISTERS_RETRIEVE",
+      "STATUS_RETRIEVE",
+      "TIME_SYNC",
+      "SELF_TEST",
+      "LOAD_PROFILE_RETRIEVE"
+    ],
+    "defaultRegisters": {
+      "METER_ID": "0.0.96.1.0.255",
+      "METER_FW_VER": "1.0.0.2.0.255",
+      "CLOCK": "0.0.1.0.0.255"
+    },
+    "userClientMapping": {
+      "1": 2,
+      "2": 3,
+      "3": 4
+    },
+    "make": "Anteleco",
+    "model": "NMD",
+    "serverAddress": 1,
+    "defaultClientAddress": 16,
+    "registerMapping": {
+      "CO_128.0.12": {
+        "obis": "1.0.128.0.12.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "0.0.0_0": {
+        "obis": "0.0.96.1.0.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "CO_128.0.11": {
+        "obis": "1.0.128.0.11.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "CO_128.32.0": {
+        "obis": "1.0.128.32.0.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "LP": {
+        "obis": "1.0.99.1.1.255",
+        "attributeIndex": 2,
+        "classId": 7,
+        "isProfileRegister": true
+      },
+      "CO_128.36.0": {
+        "obis": "1.0.128.36.0.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "CO_52.7.0": {
+        "obis": "1.0.52.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_96.50.22": {
+        "obis": "0.0.96.50.22.255",
+        "attributeIndex": 2,
+        "classId": 8
+      },
+      "CO_12.26.0": {
+        "obis": "1.0.12.26.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_96.50.21": {
+        "obis": "0.0.96.50.21.255",
+        "attributeIndex": 2,
+        "classId": 8
+      },
+      "0.9.0_0": {
+        "obis": "0.0.1.0.0.255",
+        "attributeIndex": 2,
+        "classId": 8
+      },
+      "C3DE": {
+        "obis": "0.0.99.98.10.255",
+        "attributeIndex": 2,
+        "classId": 7,
+        "isProfileRegister": true
+      },
+      "CO_128.0.10": {
+        "obis": "1.0.128.0.10.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "C2DE": {
+        "obis": "0.0.99.98.9.255",
+        "attributeIndex": 2,
+        "classId": 7,
+        "isProfileRegister": true
+      },
+      "C1DE": {
+        "obis": "0.0.99.98.8.255",
+        "attributeIndex": 2,
+        "classId": 7,
+        "isProfileRegister": true
+      },
+      "CO_0.9.0_0": {
+        "obis": "0.0.1.0.0.255",
+        "attributeIndex": 2,
+        "classId": 8
+      },
+      "CO_72.128.0": {
+        "obis": "1.0.72.128.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_52.128.0": {
+        "obis": "1.0.52.128.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_32.128.0": {
+        "obis": "1.0.32.128.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_72.7.0": {
+        "obis": "1.0.72.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_128.40.0": {
+        "obis": "1.0.128.40.0.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "72.7.0_0": {
+        "obis": "1.0.72.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "14.7.0_0": {
+        "obis": "1.0.14.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "52.7.0_0": {
+        "obis": "1.0.52.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_32.7.0": {
+        "obis": "1.0.32.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "32.7.0_0": {
+        "obis": "1.0.32.7.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "CO_12.23.0": {
+        "obis": "1.0.12.23.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "PFEL": {
+        "obis": "1.0.99.97.0.255",
+        "attributeIndex": 2,
+        "classId": 7,
+        "isProfileRegister": true
+      },
+      "FW_VER": {
+        "obis": "1.0.0.2.0.255",
+        "attributeIndex": 2,
+        "classId": 1
+      },
+      "96.6.0_0": {
+        "obis": "0.0.96.6.0.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "96.6.3_0": {
+        "obis": "0.0.96.6.3.255",
+        "attributeIndex": 2,
+        "classId": 3
+      },
+      "96.6.3_1": {
+        "obis": "0.1.96.6.3.255",
+        "attributeIndex": 2,
+        "classId": 3
+      }
+    },
+    "transportProtocol": "DLMS",
+    "defaultComModuleId": 5,
+    "defaultComModule": {
+      "subTypeId": 5,
+      "make": "AnteLeco",
+      "model": "STM32 M65-NMD",
+      "socketServerPort": 8071,
+      "hasICMPSupport": true,
+      "hasSMSSupport": true,
+      "hasNMDSupport":true,
+      "tenantId": -1234
+    }
+  }'
+);
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"5","deviceType":"METER","code":"BILLING_REGISTERS_RETRIEVE","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateValidation":"3600000","requireAuthentication":"0"},"transportMode":"NET_ONLY","registerTransactions":[],"registers":["0.0.0_0","0.9.1_0","0.9.2_0","1.8.0_0","1.8.1_0","1.8.2_0","1.8.3_0","2.8.0_0","2.8.1_0","2.8.2_0","2.8.3_0","1.8.0*01_0","1.8.1*01_0","1.8.2*01_0","1.8.3*01_0","2.8.0*01_0","2.8.1*01_0","2.8.2*01_0","2.8.3*01_0","9.6.0_0","9.6.0*01_0","10.6.0_0","10.6.0*01_0","0.4.2_0","0.4.3_0","0.4.5_0","0.4.6_0","14.7.0_0","31.7.0_0","32.7.0_0","51.7.0_0","52.7.0_0","71.7.0_0","72.7.0_0"]}','BILLING_REGISTERS_RETRIEVE',5,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"5","deviceType":"METER","code":"LOAD_PROFILE_RETRIEVE","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateValidation":"3600000","requireAuthentication":"0"},"transportMode":"NET_ONLY","registerTransactions":[],"registers":["LP"]}','LOAD_PROFILE_RETRIEVE',5,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"5","deviceType":"METER","code":"TIME_SYNC","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateAdjust":"30000","requireAuthentication":"0"},"registerTransactions":[],"registers":["0.9.1_0","0.9.2_0"]}','TIME_SYNC',5,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"5","deviceType":"METER","code":"SELF_TEST","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateAdjust":"30000","requireAuthentication":"0"},"transportMode":"NET_ONLY","registerTransactions":[],"registers":["0.0.0_0","0.9.1_0","0.9.2_0","FW_VER","1.8.0_0","1.8.1_0","1.8.2_0","1.8.3_0","2.8.0_0","2.8.1_0","2.8.2_0","2.8.3_0","1.8.0*01_0","1.8.1*01_0","1.8.2*01_0","1.8.3*01_0","2.8.0*01_0","2.8.1*01_0","2.8.2*01_0","2.8.3*01_0","9.6.0_0","9.6.0*01_0","10.6.0_0","10.6.0*01_0","0.4.2_0","0.4.3_0","0.4.5_0","0.4.6_0","14.7.0_0","31.7.0_0","32.7.0_0","51.7.0_0","52.7.0_0","71.7.0_0","72.7.0_0"]}','SELF_TEST',5,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"6","deviceType":"METER","code":"REMOTE_RELAY_ON","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireAuthentication":"0"},"transportMode":"ALLOW_SMS_FALLBACK","registerTransactions":[{"globalRegName":"CSRQ_RL","remoteMethod":{"index":2,"data":"003()","type":"STRING"}}],"registers":["0.9.1_0","0.9.2_0","CSRQ_RL","1.8.0_0","1.8.1_0","1.8.2_0","1.8.3_0","2.8.0_0","2.8.1_0","2.8.2_0","2.8.3_0"]}','REMOTE_RELAY_ON',6,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"6","deviceType":"METER","code":"REMOTE_RELAY_OFF","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireAuthentication":"0"},"transportMode":"ALLOW_SMS_FALLBACK","registerTransactions":[{"globalRegName":"CSRQ_RL","remoteMethod":{"index":1,"data":"004()","type":"STRING"}}],"registers":["0.9.1_0","0.9.2_0","CSRQ_RL","1.8.0_0","1.8.1_0","1.8.2_0","1.8.3_0","2.8.0_0","2.8.1_0","2.8.2_0","2.8.3_0"]}','REMOTE_RELAY_OFF',6,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"6","deviceType":"METER","code":"BILLING_REGISTERS_RETRIEVE","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateAdjust":"30000","requireAuthentication":"0"},"transportMode":"ALLOW_SMS_FALLBACK","registerTransactions":[],"registers":["0.0.0_0","0.9.1_0","0.9.2_0","1.8.0_0","1.8.1_0","1.8.2_0","1.8.3_0","2.8.0_0","2.8.1_0","2.8.2_0","2.8.3_0","1.8.0*01_0","1.8.1*01_0","1.8.2*01_0","1.8.3*01_0","2.8.0*01_0","2.8.1*01_0","2.8.2*01_0","2.8.3*01_0","14.7.0_0","31.7.0_0","32.7.0_0","51.7.0_0","52.7.0_0","71.7.0_0","72.7.0_0","CSRQ_RL"]}','BILLING_REGISTERS_RETRIEVE',6,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"6","deviceType":"METER","code":"LOAD_PROFILE_RETRIEVE","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateValidation":"3600000","requireAuthentication":"0"},"transportMode":"NET_ONLY","registerTransactions":[],"registers":["LP"]}','LOAD_PROFILE_RETRIEVE',6,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
+
+INSERT INTO SUB_OPERATION_TEMPLATE(OPERATION_DEFINITION,OPERATION_CODE,SUB_TYPE_ID,DEVICE_TYPE,CREATE_TIMESTAMP,UPDATE_TIMESTAMP) VALUES('{"subTypeId":"6","deviceType":"METER","code":"TIME_SYNC","type":"PROFILE","control":"NO_REPEAT","maxAttempts":1,"waitingTime":0,"isEnabled":true,"properties":{"requireDateAdjust":"30000","requireAuthentication":"0"},"registerTransactions":[],"registers":["0.9.1_0","0.9.2_0"]}','TIME_SYNC',6,'METER',CURRENT_TIMESTAMP(),CURRENT_TIMESTAMP());
\ No newline at end of file