Customer Exit-Function Module Exit with Example

Function Module exit/Function Exit : 

The function module exit allows us to add our code to the SAP programs with the help of function modules.
Syntax:CALL CUSTOMER-FUNCTION 'Three digit number'.
The three digit number in the above syntax varies from 000 to 999.
Example: CALL CUSTOMER-FUNCTION '001'.

link:Ways to find the Function Module Exit

Example: Passing default value to sold-to-party field in 'VA01' T-code. 

1.Go to T-code 'CMOD'.
2.Provide a project name and click crete.


3.Enter short description.
4.click on 'Enhancement Assignment' button.


5.Enter 'customer Exit' name (Eg:).
6.click on 'Components' button.(It shows the available function module exits)


7.Double click on the required function module exit which navigates to the function module.


8.Write the logic in the Z include of that function module. (E_KUNNR is in the export parameters of this function module.)


9.Activate the code and activate the project.

Result:
1.Go to t-code 'VA01'.

2.Select order type.

3.press enter.(You can the default value 1122 in the sold-to-party field. 

 

 



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