With validations, you can check values and combinations of values as they are being entered in the SAP R/3 System. As data is being entered it is checked against validation rules that are stored in the Rule Manager. Because validation occurs before data is posted, only valid information enters the FI-SL application component.

You can use a validation simultaneously at different callup points and you can create different dependencies for validating data. Also, you can create a validation in the system, even if it is not called anywhere (for example, for future use).

As from Release 4.6A there is a new interface with controls for processing rules. If you want to continue using the old interface, you must make the following setting: In the menu choose System ® User profile ® Own data. Then choose Parameters and create an entry with the parameter GBK and the value X.