How to: Find All Remit Addresses for a Supplier
From the supplier record
Addresses are stored in the Company Info tab. Addresses must have a usage of “Remit To” to be available as a remit (payment) address. If there are multiple remit addresses, remit-to connections need to be created for each address in order for them to be available to select for the payment.
From the Supplier Invoice
The remit address with the most current effective date will be the default payment address. If all the remit addresses have the same effective date, the primary address will be the default address, assuming it has remit usage.