diff --git a/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dao/ApiMgtDAO.java b/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dao/ApiMgtDAO.java
index 63a3125be68d..75b65bf229fe 100644
--- a/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dao/ApiMgtDAO.java
+++ b/components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/dao/ApiMgtDAO.java
@@ -5595,7 +5595,12 @@ public int addAPI(API api, int tenantId, String organization) throws APIManageme
     public String getDefaultVersion(Identifier apiId) throws APIManagementException {
 
         try (Connection connection = APIMgtDBUtil.getConnection()) {
-            return getDefaultVersion(connection, (APIIdentifier) apiId);
+            if (apiId instanceof APIIdentifier) {
+                return getDefaultVersion(connection, (APIIdentifier) apiId);
+            } else if (apiId instanceof APIProductIdentifier) {
+                return getDefaultVersion(connection, (APIProductIdentifier) apiId);
+            }
+            return null;
         } catch (SQLException e) {
             handleException("Error while getting default version for " + apiId.getName(), e);
         }