How to make payment or generate payment entries for a credit voucher without a debit voucher

Business unit is Germany and all payments are done Electronically. There is a supplier who always pays a credit note and the actual invoice might be generated in the same month or one or 2 later. Now until there are any debit vouchers created, the credit voucher does not get picked in the pay cycle and in cases where the invoices are not created the same month the credit amount is not accounted to the Bank GL code.

What feature should we look at to account the bank for the credit amount received from Supplier.