Hi -
Thank you for your reply. Though this BADI is trigerred at SAVE of WBS element, when I raise an error message from it, all the screen fields are greyed out. My only option is to raise the exception of the method. This inturn displays the error message as an information message in a pop-up.
Do you know of any other way or any other exit? Otherwise the only solution I see is to do an Enhancement spot in the PAI routine of the screen logic.
Thanks for the help.
Amit.