Hi Eli,
Thanks for your reply,
I have tried applying all the things referred in the note by you, however the error remain same.
I have make the changes in account assignment category "K", changed to changeable but when I am going to ME22N to change the PO manually account assignment tab is grayed out however I can change the account assignment by going to services tab after selecting the line and clicking on account assignment button in services tab.
but there is no effect on budget and no updation of commitment item and fund center in GR (MIGO) documents (here in this client when they complete the service entry then it will create two document one service entry document and other MIGO document GR and then user does the PO for the same).
Please help me to resolve the issue.
Regards,
Alok