Accounts payable is one of the busiest departments in an organization , the discussions used always comes with payment terms which is either in motion to get negotiated or talked between consumer and the vendor prior to the event of purchase. You can create/use payment terms in Odoo by following the navigation Purchases>> Purchases>> Request for Quotation.

e.g. net 30 means that buyer will pay seller in full on or before the 30th calendar day of when the goods were dispatched by the seller or the services were fully provided.