Field help (PCLBIDNUM) 

This field displays when the All transactions check box is selected on the Criteria section or when the bank account number is managed a selected transaction.

The bank account number displayed defaults from the BP pay-by addresses and different account numbers can be entered for each pay-by address.

If you change the bank account number, it changes for all lines for the same payment and that are set to Yes in the Select column for the line. The related bank account country and IBAN prefix fields update to match the new bank account number.

If the bank account number is managed and the Bank account no. field is empty, the line is highlighted in red if a mandatory field is missing.