CASFD0015E Offline dump requestor failed to access DUMP file for region region-name

The offline dump requester failed in its attempt to access the dump file.
Restriction: This topic applies only when the Enterprise Server feature is enabled.
System Action:
The dump request failed.
Resolution:
Check that the file exist or is not locked in the region's workarea.
Module:
dfhgtrtd
Destination:
Console and standard error.