Hi Keshav,

Please check if you have the required roles and also ensure that the required odata services are active.

You may want to check the post-installation steps if they are all completed. We had a similar issue when we started.

Another option would be to check the chrome debugger tools to see what is the response code returned.

Primarily i would say this is more basis issue if the url is not working. It may be worth trying the service from gateway test client and see what the response code is for the execution call

Thanks

Vineet