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 ).
For Payables u need to have Financial and Payables options then, Supplier, payterm, dist set, payment format, bank, taxcodes and more setups are there.
U need to study User/implementation guide for any module u want to implement.... it will describe all mandatory and optional steps in correct sequence in details.