It is common to find customer exits in SAP’s code and Function modules, to accommodate customer specific business rules in SAP provided applications. These exits sometimes are in the form:
Call Customer-Function ‘xxx’, where ‘xxx’ is usually a number. So, how do we know what the actual function module is, where we should put our custom code?
Here is a screen shot of a function module with customer exit:
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To find out the actual function module, we will need to know what the main program name is. You can go to the main program using the menu item GO TO –> Main Program
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Now, our customer exit name would be:
EXIT_<Progam Name>_<XXX>,
Where
<Program_Name> is the main program name
<XXX> is the number next to “Customer-Function”
In this example function module, the main program was : SAPLHRBEN00GENERAL.
Hence, our customer exit will be
EXIT_SAPLHRBEN00GENERAL_022
