Reg: Mandatory fields updation with BAPI

Hi..

We are working on BDC using BAPI. In this if flat files contians only 4 fields and the mandatory fields in the application are seven then system needs to through error message. But with BAPI the program is updating the database without throwing error eventhough all mandatory fileds are not filled up with data.. Where exactly we need to do modifications to get error message when mandatory fields are not filled up with input.

Regards