Validation/Substitution Callup Points
Callup points are specific places in an application that specify the exact location where a validation/substitution occurs. If you want to validate or substitute a value, you must activate validation or substitution for the callup point for which you want the validation or substitution to occur.
Example
If you want to validate account numbers that are directly entered into the FI-SL application component, you must create a validation for callup point 0002 (document line item) with application area GL (Special Purpose Ledger). (Callup point 0001 would validate the document header and not the individual document line items.) You need to activate the validation once you have created it.
At each callup point, the system can use information you have already entered (such as a user name, header information, and information entered in previous callup points) to validate or substitute the values you enter at a callup point.
Example
Suppose your check statement requires that for local company code 0001 and currency code USD, the account number must be between 200000 and 220000. In Financial Accounting (FI), you enter the account number at callup point 0002. However, you enter the local company code and currency code prior to callup point 0002. The system uses the local company code and currency information you entered in the document header (callup point 0001) to validate the account number you enter at callup point 0002.
Different application areas may use the same callup point code, but the callup point code has a different callup point, depending on the application area.
For example, callup point code 0001 is used for the document line item in Controlling (CO) validations and for the document header in Special Purpose Ledger (FI-SL) validations.