1. Access the Object Navigator (SE80)

– Open transaction SE80 (Object Navigator).

– In the dropdown list, select Function Group as the object type.

2. Create a New Function Group

– Enter a unique name for your function group and click on Create.

– Provide a meaningful description for the function group.

– In the next screen, you will be asked for a package. You can assign an existing package or create it in a local object (development system).

3. Define Global Data

– Once the function group is created, you can define global data for the function group.

– Go to the Global Data section and declare the variables, structures, or tables that will be accessible by all function modules within the group.

4. Create Function Modules

– Within the same function group, create function modules by using SE37.

– When creating a function module, assign it to the function group you just created.

– Write the ABAP code for your function module, which will now have access to the global data of the function group.

5. Activate the Function Group

– Go back to SE80 and select the function group in the left-hand navigation pane.

– Click on Activate (Ctrl+F3) to activate the function group and all associated objects like function modules, global data, and utilities.

6. Test the Function Modules

– Use transaction SE37 to test the function modules that belong to your function group.

– Ensure the function modules behave as expected and can share global data defined in the function group.