Setting Up the Accounts Payable System Before you use the JD Edwards EnterpriseOne Accounts Payable system, you need to define information that the system uses during processing. You can configure the system to process information according to your business needs. Upon completion of this lesson, you will be able to: Set up constants. Understand UDCs. Understand next numbers. Understand AAIs. Set up tax information. Set up payment terms. Set up advanced payment terms.