Function Module Exit

Scenario: Defaulting the SOLD-TO-PARTY value while creating the sales order in VA01 transaction by using FUNCTION MODULE EXIT.
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Step1. Go to Tx- SE93 and provide Tcode- VA01 & hit display button and get the package name.

Step2. Go to Tcode- SMOD.

Step3. Hit F4 Button.

Step4. Provide the above package name & continue.

Step6. From the list of Enhancements available in the Package, for our case lets choose the underlined one( double click on the decided enhancement).

Step7.  Click on Display button.

Step8. Click on Components button.

Step9. Click on the Function module.

Step10. These function module interface parameters are available to determine the sold-to-party and can be assigned to the Exporting parameter e_kunnr.

Step11. Go to Tx- VA01 to create a sales order.

Step12. Provide details and hit Enter key.

Step13. No SOLD-TO-PARTY field is defaulted.

Step14. Open KNVV table entreis. Here we can see customer- 0000099994 .

Step15. Let's create a project to default the SOLD-TO-PARTY value. Go to Tx- CMOD & provide a Project name and click on Create button.

Step16.   Provide the short text and click on the Enhancement assignment button.

Step17. Provide the enhancement name decided from SMOD transaction and hit enter button. At last click on Components button.

Step18. Double click on the Function module name.

Step19. Double click on the Include name.

Step20. Hit the Enter key from the keyboard. From the appeared pop up click on Yes button.

Step21. Provide  the below code. Here just we have hard coded  the sold-to--party vale. But the value of the sold-to-party can be decided dynamically from the importing parameters of the function module.

Step22. Put the debug point and go back.

Step23. Activate the Project.

Step24. The implementation turns green.

Step25. Now again run - Tx- VA01 and provide the values & hit enter.

Step26. The debug point reached and we can see the function modules importing parameters. Double click on the parameter : I_TVTA.

Step27. The structure I_TVTA contains the below values which can be used to dynamically decide any sold-to-party depending on the business requirement. Click on F8.

Step28. Here the Sold-to-Party field is defaulted.

Step29. Let's find where this function module exit is called in the standard VA01 transaction. From Tx- SE93 get the program name for the Tx- VA01.

Step30. Open the Program in Tx- SE38 and click on the find button.

Step31. Search for the Key Word 'call customer-function' and select main program radio button.

Step32. Here we can see ' call customer-function '002' -> our function module also ends with 002 , which calls the function module 'EXIT_SAPMV45A_002' .

Step33. In the Debugging also we can see.

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Menu Exit

Menu Exit Provides an option to the customer/user to enhance the menu option on the standard screen. 
The below post describes how to find out if any Menu exit is available for any screen or not. If yes then how to implement it to achieve menu enhancement.

For example purpose let's try the menu exit option for the sap editor screen.

To search if any menu exit is available or nor Tx- SMOD is used and to implement the Menu Exit Tx- CMOD is used.
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Step1. Go to Tx- SMOD.

Step2. Press F4 button.

Step3. Click on continue.

Step4. Click on the Search button.

Step5. Search with editor key word.

Step6. Select (DOUBLE CLICK )one enhancement- SEU00002.

Step7.  Select (DOUBLE CLICK )one enhancement- SEU00002.

Step8. Click on Display button.

Step9. Click on components button.

Step10. Well it provides Function Codes & Function Module exits. With the help of function code we can define a new menu option and function module exit can be used where the user can provide the code to react on the action when user clicks on the menu option.

Step11. To implement the Enhancement go to Tx- CMOD.

Step12. Provide a Project Name & click on the create button.

Step13. Provide a short text and click on Enhancement assignment button.

Step14. Provide the enhancement name that we decided from Tx- SMOD & hit ENTER BUTTON. Then  CLICK ON COMPONENTS button.

Step15. Under Menu exit- double click on First option (SAPLWABAP) .

Step16. Provide a function text and icon and  at last click on Copy button.

Step17. To define the code when user click on the menu option, double click on the first FM Exit.

Step18. Double click on the Include name and then hit Enter button to Create an implementation.

Step19. Click on Edit button, provide an appropriate code and activate it. At last go back.

Step20. Activate the project.

Step21. Go to Tx- SE38. Under Utilities We can find the Menu Option as :  Enhanced Option . Click on this.

Step22. The implemented function module exit code triggers and we received a message.

Step23. Go back to the project and deactivate it.

Step24. Again lunch Tx- SE38 and this option is not available as the project is deactivated.

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