Hai experts ,
I want solution for below problem
client wants that , once migo is over for po ( as per fully or partially ) , Its not possible to change the po .
once i raise po and released po . after any wants to change is possible when before gr only.
once gr is over ( partially or completely ) restrict to change po .
As per i know if release indicator function changeable take 1 . but it is effect before gr also to restrict po . i want after gr only its not possible to change po.
can you tell me any bapi or badi or user exits for this one .
i want logic also