Field help (RBEBKPAYTY) 

If a remittance is defined, the field cannot be entered and corresponds to the payment transaction linked to the note.
If no remittance is defined, the payment transaction defined will be used during the payment generation. By default, the loaded transaction is the one set up the parameter value BELTRSDEF - Payment transaction.

Control in entry

The controls performed are the same as those applied to the parameter value BELTRSDEF - Payment transaction.