Need to fill a new field in table EKKO

Question

Hi all,
i created a new field (ZZCODE) in the table EKKO. Well, now i would like to fill this field when the user save his purchase order. Which user-exit or BADI can i use ?
I tried a lot but either i can't change the parameters values either the FM is not raise.
Thanks for help.

Answer 1

HI CECG,
Yesterday itself i tried this example,
i will forward u the document to ur mail id,
plz provide me the mail id so that i will forward u the doc..
STEP-BY-STEP PROCEDURE FOR SCREEN EXIT IN ME21n TRANSACTION
Introduction:
                    SAP provides standard transactions to enter data into database. But a client may want to maintain some additional information in SAP other than what is provided.
                    To make provisions for this, additional screens have to be provided and additional fields must be added into appropriate database table.
Requirement:
                     You have to add the custom field in SAP standard table EKKO. Then we have to place the field in ME21N screen. When user enters any input into the field it should get updated in the database.
Note:
                     EKKO table is meant for Purchasing document header, you should add the field in the header level for ME21n screen. There you are provided with customer sub screens where you can add the field in the screen.
In EKKO table
include : cl_ekkodb
in that u can add the field u want
Procedure:
1.     You have to create a field in the Custom Include of standard table, after creating activate it.
2.     Double click on the include then you can add your custom field here.
Find out the Required Enhancements:
1.     Go to SMOD. Press F4 in the Enhancement field. In the next popup window, click pushbutton ‘Information system’.
MM06E005 : CUSTOMER FIELDS IN PURCHASING DOCUMENT
2.     Then mention the particular package name of the transaction you need to      enhance. Then you will be shown the list of Enhancement components for that particular package.
3.     Note down the enhancements. Then, come to the initial screen of SMOD and view the documentation of each enhancement to find out which one is required for your development.
MM06E005 is the Enhancement component we are using here.
Development
Creating a Project to include the enhancement:
1.     Go to transaction CMOD and create a project.
2.     Enter a description for the project.
3.     Then, click on the pushbutton ‘Enhancement Assignments’ in the Application Toolbar.
4.     Click on the components in Application Toolbar.
5.     Here you will be shown the function module exits, screen exits and Include tables.
6.     Click on the custom screen SAPLXMO6 – 0101 in which it suits the requirement of adding the custom field to the layout.
7.     Click on layout and go to get from dictionary and select the field you need to add and click ok.
8.     Place the field in the layout and activate it.
9.     After that you come back and check the respective function module in which you need to implement the code. So, we need to import the data from sub screen for purchasing document header. Therefore we have chosen  the  EXIT_SAPMM06E_008.
10. Write code in the Function Exits to synchronize the programs:
                       Now, code has to be written in the function modules EXIT_SAPMM06E_008 so that data flows to and fro between the main SAP program and custom sub screen program. Double clicking on the exit we get the following screen.
11. Double click on the include and write the required code inside it. Then activate it.
12. Now come back and activate the entire project.
13. Now go to ME21n transaction and create a purchase order by giving all the mandatory fields including custom field we have created. Go to SE16n, check whether the field got updated in the database or not.
Finally it gets updated in the database.
IF U PROVIDE ME UR MAILID I CAN SEND U THE DOCUMENT WHICH IS VERY CLEAR FOR PURCHASE ORDER
PLZ REWARDS POINTS IF HELPFUL,
Ganesh.