Hello Gurus,
Correct me if I am wrong but the way I feel this problem has to dealt with is :
1. Create the PO using normal ME21N and enter the necessary details without the service number and maintain the short text as per your requirement once the PO is done save the PO.
now
2. Goto
SPRO -> IMG -> Materials Management -> Purchasing-> Purchase Order -> Define Screen Layout at Document level. Click on the execute button.
select the above " ME22N & ME23N" Field status and double click on it. we would get :
have shown the process for the ME22N(Change PO mode)
Double click on Basic Data (Item) to get the following screen and make sure that the box marked in red is ticked as shown :
Repeat the same from the screen layout and choose ME23N ( PO display mode).
I hope it solves the purpose and nobody would be able to alter the PO short text.
With Regards,
Sagnik Chakravarty