How to Create Function Modules

3 min readDec 27, 2021

In this blog, I will discuss what is Function Module and how we can create a Function Module.

Function modules are sub-programs that contain a set of reusable statements with importing and exporting parameters.

Function Group in SAP ABAP.

Function group is a container of Function modules, every Function Module is saved in a Function group.

T-Code for creating Function modules and Function Group is SE37 OR SE80.

Components of Function Module:

▪ Import Parameters: These are input parameters of a Function Module. Cannot be modified inside the Function Module.

▪ Export Parameters: These are output parameters of a Function Module They are used for transferring data to the calling program.

▪ Changing Parameters: It acts as import and export parameters. Changing parameters are passed by reference, value, and result.

▪ Tables: These are internal tables that also act as importing and exporting parameters.

▪ Exceptions: Used to inform the calling program about unexpected errors.

Creating a Function Module

Then one pop-up will open there you have to give the name and description of the function module.

Note Function Group and Function Module Name always starts with Z or Y.

Click on Save and give your package name and save it on your TR or in Local object.

Here we have to give the Function Module and Function Group which we have created from the above step. Click on save.

Now our Function Module is created and according to our need, we will write code and modify it.

Conclusion

In the article, I give an off view of what is Function Module and how we can create a Function Module. in SAP ABAP.

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