Field help (BSISEABPAC) 

Enter the BP account to use if the payment should be assigned directly to a BP account. Note that in this case a payment without direct relation to an invoice is generated.

You can enter a G/L account or a BP account, but not both. For a BP account, a control account must also be given.

A (fixed) distribution can be used if the BP account is set up for analytical accounting.

Note: For one search term, you can enter a G/L account or a BP account, but not both.