CASST4021E Shutdown PLT Processing Failed

The PLTSD processing encountered an error in processing program list or one of the programs in the list ABENDed.
Restriction: This topic applies only when the Enterprise Server feature is enabled.
System Action:
Shutdown processing aborted.
Resolution:
Do a SHUTDOWN IMMMEDIATE to bypass PLTSD processing.
Module:
dfhzcqit
Destination:
Console (and Terminal)