How to Create a Function Module with Export Parameter in SAP.
Note: Before creating the Function Module first a Function Group must be created.
(Link for Function Group Creation).
Step 1: Go to T-code SE37. Enter the name of Function Module and create.
Step 2: Enter the name of the Function Group you created before and the Short text of the Function Module. Click on Save Button.
Step 3: Click on the button on next screen.
Step 4: Under Attributes tab, you can change the Short Text, if you want.
Step 5: Under the Import tab, create a parameter which will import value as shown below.
Step 6: Under the Export tab, create a parameter which will export value as shown below.
Step 7: Under the Exceptions tab, create a Parameter with short text as shown below.
Step 8: Under the Source Code tab, write the Program as shown below.
Step 9: Click on savebutton and activate it.
Step 10: Now click on the button and enter the value in Import Button and click on the button.
Step 11: Output is in Export Parameter.To view the output click on the button.