How does an Invoice Message get Assigned to a Buyer/Authority Code?

When an invoice message is generated, the application first looks at the invoice for an authority code. If no authority code exists, then the application looks at the buyer on the purchase order, then it looks to see if the buyer is assigned to an authority code. If the authority code is found, it defaults. If an authority code is not found, the buyer code defaults.

Once invoice messages are in Message Queue (MA64.1-3), a new buyer/authority code can be assigned to the message by the accounts payable clerk/approver or by the buyer/authority code.