Hi Sarbjeet,
Thanks for your help.
I checked different notes but I could not find relevant one. However, I tried to debug the issue and found out reason for the same.
There is a special handling of shortcut proxy in following method to execute batch request.
Method: /IWFND/IF_MGW_REQUEST_MANAGER~BATCH_EXECUTE
But now if you do not return anything from your CREATE_ENTITY method which is getting called from above method then system is raising the above message.
/IWBEP/IF_MGW_APPL_SRV_RUNTIME~CREATE_ENTITY.
Earlier it was handled by SAP if you do not return anything but it seems it has been removed in new upgrade.
/IWBEP/CL_MGW_REMOTE_HANDLER-CREATE_ENTITY_TYPE
Now I am returning some empty data and it has solved my issue now.
Regards
Bhavin