How to Prevent supplier from sending invoices based on BillTo Country (Instead of ShipTo Location)

[fountain]

Our requirement is to restrict creation of ASN electronic invoices for Country X (BillTo Country), however system is restricting the ASN invoice creation based on ShipTo instead of BillTo Country (after selecting the country in country based invoicing rules ...

Prevent suppliers from sending invoices to the following countries

This is impacting global suppliers and users if any PO is created with ShipTo site having in Country X. We want to restrict only those invoices where BillTo is Country X. Can some advise if this is possibility and how can it be done?

regards