The migration tool attempts to compile all NiagaraAX Program objects (components) in the station to be compatible with Niagara 4, flagging any that fail to compile properly in the migration report, or log file. Using Workbench, you should modify any such Program objects until they recompile successfully, before installing the station.
Prerequisite: You must have a working knowledge of Java programming, Program objects, and the Program Editor view in Workbench. Access to Developer-level Niagara 4 documentation may be needed.