Hello Sudhir,
Quickly debug and check the URL formed at the run time in the application.
From this you can correct the URL.
Check if any BATCH operations are being done i.e., check the payload.
The mentioned error comes when your are sending filter parameters wrongly inside your payload.
Inside payload URI Convention for filter is as below :
GET get_emp_dataSet?$filter=Userid+eq+'00001'+and+Name+eq+'ASH*' HTTP/1.1
Kindly check the above points.
Regards,
Ashwin