I need to wrtie exit in OBBH so wht i did is in ZRGGBS000 module i added exit U901. But once i activate the code and come back and press f4 i am not able to see the exit wht i created and 2nd issue is
1) Using the reference number BKPF-XBLNR (billing doc number), get the customer PO line VBKD-BSTKD.
2. Update BSEG-SGTXT (user exit should only be called for GL lines other than the 2 specifically excluded).
But how to write the code to get customer PO based on reference number in BKpf as there is no link between two tables.
Can anyone please help me out . I do abt fico at all