Handle error or warning message in updata task fm

Question

Hi Experts,
I have an requirement of creating materials. I am doing this in an update task FM. Now i want that if some error comes during creation of material then i display them in an alv on the screen.So inside the FM in case of error i populated it in the tables parameter of FM.But when i come back to the calling program this table is always coming empty. Could anybody please explain how to solved this problem or how we can pass the data back to the main program.
Thanks in advance

Answer 1

Hi,
Do you know how an update BAPI  ( Create, Change ) works .
1) At First, it does validation for important fields for every tables passed in the BAPI.
perform check_on_header.
*  In the subroutine called, if error occurs, it sets sy-subrc value to 8 and fills the bapireturn     parameter.
check sy-subrc < 8.
perform check_on_items.
check sy-subrc < 8.
At the end, when all the data is clean, it calls the update task
if sy-subrc = 0.
CALL FUNCTION 'BAPI_XXX_POST' in update task.
endif.
2) We check the return parameters of the bapi call and if successful call 'BAPI_TRANSACTION_COMMIT'.
3) The actual posting in 'BAPI_XXX_POST' happens once commit work statement is called in 'BAPI_TRANSACTION_COMMIT' .
You too have to adopt similar approach.
Regards,
DPM