AP_INVOICES_ALL Standard WHO Columns - Urgent help

Question

I created some Invoices(Debit memos), later i approved them in the front end and expected the last_update_date to change, but it didnt.
Is there anything else that could be controlling the update on the standard WHO columns. My program depends on the last_update_date as a driving criteria, i am stuck at this point, wondering if something is preventing the update on the WHO columns.
Can someone help me in this regard.

Answer 1

I see this statement at the end of approval. May you can use this:
UPDATE ap_invoice_distributions D
SET match_status_flag = 'T',
last_update_date = SYSDATE,
last_updated_by = p_user_id,
program_application_id = decode(fnd_global.prog_appl_id,
-1,null,
fnd_global.prog_appl_id),
request_id = decode(fnd_global.conc_request_id,
-1,null, fnd_global.conc_request_id),
program_id = decode(fnd_global.conc_program_id,
-1,null, fnd_global.conc_program_id),
program_update_date = decode(fnd_global.conc_program_id,
-1,null, SYSDATE)
WHERE match_status_flag = 'S'
AND D.invoice_id = p_invoice_id;
Thanks
Nagamohan