Accounting with SAP R/3
Process of checking values and combinations of values as they are entered into the SAP System.
Entered values are checked against a user-defined Boolean statement (prerequisite). If the statement is true, the system validates the data using a second Boolean statement (check). If the check statement is true, the system posts the data. If the check statement is false, the system issues a user-defined message. Depending on the message type, the posting may be blocked. Validation occurs before the data is posted so that only valid data is posted.
[vgl. www.sapinfo.net (4.1.2002), URL]