There might be instances where the operator must either cancel the RNL change or cancel jobs that hold the affected resources. For example consider cancelling the RNL if a job is:

1. Not cancellable is holding affected resources for a long time.
2. Holding an affected resource and cannot DEQ that resource because it is suspended by global resource serialization pending a new ENQ for another affected resource.
3. Waiting for some other work in the system that has issued an ENQ for an affected resource and has become suspended.
4. Suspended by the RNL change is considered more important than the RNL change.

See z/OS MVS System Commands for more information about DISPLAY GRS and SET GRSRNL commands.