I have tried to find a good explanation of how the bank account priority assigned to a supplier site

The supplier site has 3 bank accounts assigned.  Bank A is priority 1, bank B is priority 2 and bank C is priority 3.  Supplier is paid via check.  How does Oracle use these priorities?  I know there is an option to allow them to change the remittance bank account when entering invoices. I assume Bank A would default in during data entry? Otherwise, what does is the purpose of the priority?

The supplier site has 3 bank accounts assigned.  Bank A is priority 1 and Primary, bank B is priority 2 and bank C is priority 3.  Supplier is paid via EFT.  How does Oracle use these priorities?  I know there is an option to allow them to change the remittance bank account when entering invoices. I assume Bank A would default in during data entry? Otherwise, what does is the purpose of the priority?