Opinion on Solution
We have following requirement:
We want to discontinue using some old Material Groups.
Instead of those we want to use new Material Groups. But for historical reporting we dnt want to delete those Material Groups. We dnt want to allow users to select those Material Groups in Create/Change of document.
We have identified list of Transactions like MM01, MM02, ME51 etc.
To achive the above, we are thinking to create <b>Field Exit</b> for Data Elements used across this Transactions, which would validate the entry. It can be done with the help of Custom Table or Authorization
If there's any other way to accomplish this in more efficient manner, please suggest the same.