This forum is to discuss different features/issues of Oracle Financials modules ( GL - General Ledger, AP - Accounts Payable, AR - Accounts Receivable, FA - Fixed Assets & CM - Cash Management ).
Hallow:
You need to record the discounts as separate transaction "Debit Memo"
Then you can pay the original invoice and the related Debit memo in one payment. The result will be the net amount to your supplier