In the p>SAP system, normal and customer receivables can be realized through sales orders.
however, in actual operation, it is often found that the price is wrong or for other reasons, and customers need to be refunded or paid for the goods, or customers need a small amount of materials, but they can't handle them by means of sales materials, etc., which can be handled through debit vouchers (debit vouchers for making up the goods received from customers and credit vouchers for refunding customers).