Company may have more than one bank account in the same bank. User should be able to generate one payment file including different debit bank accounts. ISO20022 Credit Transfer format accepts this.
However, in Finance & Operations user is not able to leave the field Bank account blank in order get all payments for different company bank accounts empty to get all payments included in the payment file.

Suggestion: user is able leave the field for bank account blank when generating payment file(s) and get payments from different bank accounts transferred to the payment file.