Simple example ( Division operation ) for creating Normal function module and usage

Steps:

• Go to transaction code SE37.

• Enter the function module name start's with Y or Z<function module name> and click on create button.

• Enter the function group name.
• Enter the short description.
• Click on SAVE button.

• Pop-up will appear. Click on continue.

• Click on attribute tab and select Normal Function Module.

• Enter the import parameters.

• Enter the export parameters.

• Click on exception tab and enter the exceptions.

• Click on source code tab.

Source code

IF  NUM1 IS INITIAL AND NUM2 IS INITIAL.
   RAISE INITIAL_VALUE.

ELSEIF NUM2 IS INITIAL.

   RAISE DIVIDE_BY_ZERO.

 ELSE.

   RES = NUM1 / NUM2.
ENDIF.

• Save -> Check -> Activate.

Usage of function module

Steps

• Go to transaction code SE38.

• Enter the program name start's with Y or Z<program name > and click on create button.

• Enter the Title.
• Select Attribute Type as Executable Program.
• Click on save button.

• Enter the source code ,

To call function module

• Click on Pattern .

• Pop-up will appear.

• Enter the function module name and click on create.

• Source code look like this,

• Pass program's import and export parameters

• Note : Enable import / export / exceptions using "CTRL +  >".
• Handle output as well as exceptions.

• Save -> Check -> Activate.

• Execute (F8).

Input-1

• Without input value's.

Output

• Execute

Input-2

• Enter N1  value and do not enter the value N2.

• Execute.

Input-3

• Enter N1 and N2 values.

• Execute.

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