The OOTB "lock" transition can only be used in Promotion Requests. Please implement it also for other Change Objects.
Goal:
Lock the edit of the resulting objects (WTParts, EPMDocuments, WTDocuments) as long as the Change Notice is in state "Under Review". That would force the user to do a "rework" so that the resulting objects are unlocked again and the process runs through all needed steps (validations, reviews, update attributes...) again.