diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationManager.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationManager.java
index 4628aa0bae2..6c6676d18fe 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationManager.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationManager.java
@@ -150,8 +150,7 @@ public interface ApplicationManager {
      * @param stateName Lifecycle state to change the app
      * @throws ApplicationManagementException ApplicationDTO Management Exception.
      */
-    void changeLifecycleState(String releaseUuid, String stateName)
-            throws ApplicationManagementException;
+    void changeLifecycleState(String releaseUuid, String stateName) throws ApplicationManagementException;
 
     /**
      * To update release images such as icons, banner and screenshots.
diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/LifecycleStateDAO.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/LifecycleStateDAO.java
index a41c779ff08..3a62f54d7f8 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/LifecycleStateDAO.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/LifecycleStateDAO.java
@@ -64,8 +64,7 @@ public interface LifecycleStateDAO {
      *
      * @throws LifeCycleManagementDAOException Lifecycle Management DAO Exception.
      */
-    void addLifecycleState(LifecycleState state, int appReleaseId, int tenantId)
-            throws LifeCycleManagementDAOException;
+    void addLifecycleState(LifecycleState state, int appReleaseId, int tenantId) throws LifeCycleManagementDAOException;
 
     /**
      * To delete lifecycle state data of specific application release.
diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java
index b034e2e6414..808d1603dfb 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java
@@ -102,7 +102,7 @@ public class GenericApplicationReleaseDAOImpl extends AbstractDAOImpl implements
             statement.setBoolean(15, applicationRelease.getIsSharedWithAllTenants());
             statement.setString(16, applicationRelease.getMetaData());
             statement.setString(17, applicationRelease.getSupportedOsVersions());
-            statement.setString(18, applicationRelease.getCurrentState());
+            statement.setString(18, applicationRelease.getCurrentState().toUpperCase());
             statement.setInt(19, appId);
             statement.executeUpdate();
             resultSet = statement.getGeneratedKeys();
@@ -474,9 +474,9 @@ public class GenericApplicationReleaseDAOImpl extends AbstractDAOImpl implements
             statement.setBoolean(14, applicationReleaseDTO.getIsSharedWithAllTenants());
             statement.setString(15, applicationReleaseDTO.getMetaData());
             statement.setString(16, applicationReleaseDTO.getSupportedOsVersions());
-            statement.setString(17, applicationReleaseDTO.getCurrentState());
-            statement.setInt(18, tenantId);
-            statement.setInt(19, applicationReleaseDTO.getId());
+            statement.setString(17, applicationReleaseDTO.getCurrentState().toUpperCase());
+            statement.setInt(18, applicationReleaseDTO.getId());
+            statement.setInt(19, tenantId);
             if (statement.executeUpdate() == 0) {
                 return null;
             }
diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java
index 8280402398e..047db1adb77 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java
@@ -1625,7 +1625,11 @@ public class ApplicationManagerImpl implements ApplicationManager {
                 lifecycleState.setPreviousState(applicationReleaseDTO.getCurrentState());
                 lifecycleState.setUpdatedBy(userName);
                 applicationReleaseDTO.setCurrentState(stateName);
-                this.applicationReleaseDAO.updateRelease(applicationReleaseDTO, tenantId);
+                if (this.applicationReleaseDAO.updateRelease(applicationReleaseDTO, tenantId) == null) {
+                    String msg = "Application release updating is failed/.";
+                    log.error(msg);
+                    throw new ApplicationManagementException(msg);
+                }
                 this.lifecycleStateDAO.addLifecycleState(lifecycleState, applicationReleaseDTO.getId(), tenantId);
                 ConnectionManagerUtil.commitDBTransaction();
             } else {
diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/ApplicationManagementPublisherAPI.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/ApplicationManagementPublisherAPI.java
index 18c1e4adc4f..2c3cc24a675 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/ApplicationManagementPublisherAPI.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/ApplicationManagementPublisherAPI.java
@@ -931,12 +931,12 @@ public interface ApplicationManagementPublisherAPI {
                     name = "oldTagName",
                     value = "Existing Tag Name",
                     required = true)
-            @PathParam("oldTagName") String oldTagName,
+            @QueryParam("from") String oldTagName,
             @ApiParam(
-                    name = "tag",
+                    name = "newTagName",
                     value = "Modifying Tag Name",
                     required = true)
-            @QueryParam("tag") String newTagName
+            @QueryParam("to") String newTagName
     );
 
     @GET
diff --git a/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/impl/ApplicationManagementPublisherAPIImpl.java b/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/impl/ApplicationManagementPublisherAPIImpl.java
index 30fafccb65b..d152f6f2665 100644
--- a/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/impl/ApplicationManagementPublisherAPIImpl.java
+++ b/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.api/src/main/java/org/wso2/carbon/device/application/mgt/publisher/api/services/impl/ApplicationManagementPublisherAPIImpl.java
@@ -551,10 +551,10 @@ public class ApplicationManagementPublisherAPIImpl implements ApplicationManagem
     @PUT
     @Override
     @Consumes("application/json")
-    @Path("/tags/{oldTagName}")
+    @Path("/tags/rename")
     public Response modifyTagName(
-            @PathParam("oldTagName") String oldTagName,
-            @QueryParam("tag") String newTagName) {
+            @QueryParam("from") String oldTagName,
+            @QueryParam("to") String newTagName) {
         ApplicationManager applicationManager = APIUtil.getApplicationManager();
         try {
             applicationManager.updateTag(oldTagName, newTagName);