Remove apim_reserved_user when fetching users

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/impl/UserManagementServiceImpl.java

@@ -424,6 +424,9 @@ public class UserManagementServiceImpl implements UserManagementService {
             userList = new ArrayList<>(users.size());
             BasicUserInfo user;
             for (String username : users) {
+                if (Constants.APIM_RESERVED_USER.equals(username)) {
+                    continue;
+                }
                 user = getBasicUserInfo(username);
                 userList.add(user);
             }
@@ -484,6 +487,9 @@ public class UserManagementServiceImpl implements UserManagementService {
             if (StringUtils.isNotEmpty(username)) {
                 commonUsers = getUserList(null, username);
             }
+            if (commonUsers != null) {
+                commonUsers.remove(Constants.APIM_RESERVED_USER);
+            }
 
             if (!skipSearch(commonUsers) && StringUtils.isNotEmpty(firstName)) {
                 tempList = getUserList(Constants.USER_CLAIM_FIRST_NAME, firstName);
@@ -658,6 +664,9 @@ public class UserManagementServiceImpl implements UserManagementService {
             userList = new ArrayList<>();
             UserInfo user;
             for (String username : users) {
+                if (Constants.APIM_RESERVED_USER.equals(username)) {
+                    continue;
+                }
                 user = new UserInfo();
                 user.setUsername(username);
                 user.setEmailAddress(getClaimValue(username, Constants.USER_CLAIM_EMAIL_ADDRESS));

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/util/Constants.java

@@ -30,6 +30,7 @@ public class Constants {
 	public static final String USER_CLAIM_MODIFIED = "http://wso2.org/claims/modified";
 	public static final String USER_CLAIM_DEVICES = "http://wso2.org/claims/devices";
 	public static final String PRIMARY_USER_STORE = "PRIMARY";
+	public static final String APIM_RESERVED_USER = "apim_reserved_user";
     public static final String DEFAULT_STREAM_VERSION = "1.0.0";
 	public static final String SCOPE = "scope";
 	public static final String JDBC_USERSTOREMANAGER = "org.wso2.carbon.user.core.jdbc.JDBCUserStoreManager";