In this activity you make the preparations for the correct identification of open items.
In the payment advice item, you enter data that is to result in selecting an open item (for example document number, reference number, billing document number). You need so-called selection rules to convert the data, the person paying sends you, (for example, delivery note number) into information the system can understand. According to these rules, an internal selection field as well as a value to be selected for the determination of the open items is derived from an external selection field.
The selection rule can be defined in the customer master with the company code-dependent data. In this case, it is stated in the payment advice note as a default value.
The customer sends a payment advice note in form of a delivery note with the external selection field "Delivery note number". The system now determines the internal selection field "Document number" by means of the defined rules by finding the value that is relevant for determining the open item.
Define your selection rules.