Exit F-53 issue

Question

Hi All,
I am using F-53 user-exit EXIT_SAPLF048_001- ZXF48U01 to control the vendor payments.
I need to through custom messages if payment is exceed the PO total amt.
User may select multiple Account document and pay the amt.
But iam unable to get which lines user has selected.
DOC_ITEM_TAB table has only amt and payment docu no (which is generate after save).
Can you please tell me how to capture user selected lines in payment screen.
Regards
SK

Answer 1

Hi Sravan,
Tell me first do you need the selected accounting document before the payment document posting or after?
My requirement was after....and I solved the problem like below,
Form this exit a called a self created z RFC function module (Starting new task).
and in that function module we checked that the payment document posted or not using,
Do.
a select single from bseg with that available payment document number.
if sy-subrc eq 0.
exit. (i.e document posted)
endif.
enddo.
then put payment document number in AUGBL field and buzei = 001 and gjahr etc and get the list of belnr from bseg.
Please give reward for the help
Regards,
Kamal Hasan
PwC