Hello Hari Shankar,
Adding on to what people have explained, please find below mentioned my comments.
In the SAP System, almost all input values are validated by a program or against tables or master files. Since some types of validations cannot be standardized, you can use FI-SL's validations program to create validations for your system.
With validations, you can check values and combinations of values as they are being entered in the SAP environment. Validation rules are stored in the Rule Manager; as data is entered, the Integration Manager validates the data against the validation rules stored in the Rule Manager. Because data is validated before it is posted, only valid information enters the FI-SL System.
You define validation rules using Boolean logic. When you define a validation rule, the system checks the validation rule to ensure that it is syntactically correct.
You can also define the result of breaking the validation rule. For instance, you can specify that a message is issued but the user can continue processing. You can also force the user to correct the error before processing can continue.
Example-In your SAP org structure there are 3 company codes and 4 business areas. You must be aware that business areas are not assigned to company codes but the requirement is that out of the 4 business areas one business area posts to only one specific company code. You can use a validation for that.
Substitution: In FI-SL substitution, the values entered into the SAP R/3 System are validated against a prerequisite defined by the user. When the prerequisite is met, the system replaces the values entered with substitute values, and the substitute values are transferred into the FI-SL application component.
Please assign points.
Rgds
Manish
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