validation (FI-SL)

The 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 (this is a prerequisite). If the statement is true, the SAP system validates the data using a second Boolean statement (as a check). If the check statement is true, the SAP system posts the data. If the check statement is false, it 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.