This information is mandatory and can be modified. It is initialized by the paying BP defined in the customer record of the bill-to customer in the case of a direct invoice or credit memo. By the pay-by BP defined in the original document in the case of the invoicing of an order, a shipment, etc. This information is then no longer modifiable.
From this field, it is possible to directly enter a pay-by BP whose existence is controlled in the corresponding table or to use the contextual button in order to: