SAP function exit - find actual function module represented by customer-function

Once you have found the Function Exit represented by the customer-function fm within the source code (Find Function Exit), you need to access the actual function module it executes. This is done using the following steps:

Step 1
Locate desired 'Call Customer-function' statement within source code.


Step 2
If code is not within main program (module pool) e.g. SAP* then you will need to find this out by selecting 'Main Program' from the 'GOTO' menu. The Main program for transaction MR1M is SAPLMR1M.

Step 3
The actual function module name can now be calculated based on the information retrieved, it is defined by the following format:

       EXIT_<Program name>_<Exit number> 

In the case of transaction MR1M it is 'EXIT_SAPLMR1M_004'.