We have following scenario.
The system must check weather the WBSE is Planning Element. If Not the system must mark it as Account Assignment element & Then in next step Lock the Account Assignment for that WBSE( system status= AALK).
APMK I am approaching this from two angles-
1) We may use substitution & then execute User Exit to set the system status as AALK.( I need some expert comments & guidance on this method)
2) I am also able to solve my problem, if somehow I can work out, an exit or Boolean logic to find out what is the level of lowest level WBSE in a project. Note that the lowest WBSe can vary from 2-5 in our scenario. ( some guidance on this will also help alot)