If a default third-party payment relationship is defined for the invoice date, the third-party information is copied to the invoice...
What happens if I create an invoice using Supplier Portal for a supplier that is set up for third-party payments?
If a default third-party payment relationship is defined, the third-party information is copied to the invoice. If a default third-party payment relationship is defined, the third-party information is copied to the invoice. If a default third-party payment relationship is defined, the third-party information is copied to the invoice.