diff --git a/components/email-mgt/org.wso2.carbon.email.mgt/src/main/java/org/wso2/carbon/email/mgt/NotificationTemplateManagerImpl.java b/components/email-mgt/org.wso2.carbon.email.mgt/src/main/java/org/wso2/carbon/email/mgt/NotificationTemplateManagerImpl.java
index 70aaf6c7..93b2dadc 100644
--- a/components/email-mgt/org.wso2.carbon.email.mgt/src/main/java/org/wso2/carbon/email/mgt/NotificationTemplateManagerImpl.java
+++ b/components/email-mgt/org.wso2.carbon.email.mgt/src/main/java/org/wso2/carbon/email/mgt/NotificationTemplateManagerImpl.java
@@ -100,10 +100,14 @@ public void addNotificationTemplateType(String notificationChannel, String displ
         try {
             if (unifiedTemplatePersistenceManager
                     .isNotificationTemplateTypeExists(displayName, notificationChannel, tenantDomain)) {
-                // This error is caught in the catch block below to generate the
-                // NotificationTemplateManagerServerException.
-                throw new NotificationTemplateManagerInternalException(
-                        TemplateMgtConstants.ErrorCodes.TEMPLATE_TYPE_ALREADY_EXISTS, StringUtils.EMPTY);
+                // Throwing error due to duplicate template type.
+                String code = I18nEmailUtil.prependOperationScenarioToErrorCode(
+                        TemplateMgtConstants.ErrorMessages.ERROR_CODE_TEMPLATE_TYPE_ALREADY_EXISTS.getCode(),
+                        TemplateMgtConstants.ErrorScenarios.NOTIFICATION_TEMPLATE_MANAGER);
+                String message = String.format(
+                        TemplateMgtConstants.ErrorMessages.ERROR_CODE_TEMPLATE_TYPE_ALREADY_EXISTS.getMessage(),
+                        displayName, tenantDomain);
+                throw new NotificationTemplateManagerServerException(code, message);
             }
             unifiedTemplatePersistenceManager.addNotificationTemplateType(displayName, notificationChannel,
                     tenantDomain);
@@ -115,19 +119,6 @@ public void addNotificationTemplateType(String notificationChannel, String displ
                     TemplateMgtConstants.ErrorMessages.ERROR_CODE_ERROR_ADDING_TEMPLATE.getMessage(), displayName,
                     tenantDomain);
             throw new NotificationTemplateManagerException(code, message, e);
-        } catch (NotificationTemplateManagerInternalException e) {
-            if (TemplateMgtConstants.ErrorCodes.TEMPLATE_TYPE_ALREADY_EXISTS.equals(e.getErrorCode())) {
-                String code = I18nEmailUtil.prependOperationScenarioToErrorCode(
-                        TemplateMgtConstants.ErrorMessages.ERROR_CODE_TEMPLATE_TYPE_ALREADY_EXISTS.getCode(),
-                        TemplateMgtConstants.ErrorScenarios.NOTIFICATION_TEMPLATE_MANAGER);
-                String message = String.format(
-                        TemplateMgtConstants.ErrorMessages.ERROR_CODE_TEMPLATE_TYPE_ALREADY_EXISTS.getMessage(),
-                        displayName, tenantDomain);
-                throw new NotificationTemplateManagerServerException(code, message, e);
-            }
-            if (log.isDebugEnabled()) {
-                log.debug("Error when adding template type : " + displayName + " to tenant : " + tenantDomain, e);
-            }
         }
     }