A notification definition may be revised in any of the following ways:
Otherwise, if the semantics of any previously defined notification are changed (i.e., if a non-editorial change is made to any clause other those specifically allowed above), then the OBJECT IDENTIFIER value associated with that notification must also be changed.
Note that changing the descriptor associated with an existing notification is considered a semantic change, as these strings may be used in an IMPORTS statement.
Finally, note that if an object has the value of its STATUS clause changed, then the value of its DESCRIPTION clause should be updated accordingly.