DFHNC0491 ENFREQ ACTION=action failed, return code retcode.
Explanation
An ENF request issued by the named counter sequence number server gave an unexpected return code.
System action
If this occurs on the ENFREQ ACTION=LISTEN request and the server is subsequently unable to connect to the list structure, the server will be terminated instead of waiting for the structure to become available.
User response
See the documentation of the ENFREQ macro in z/OS MVS Programming: Authorized Assembler Services Reference (Volume 1) (GC28-1765) for the explanation of the return and reason code.
Module
DFHNCENDestination
Console and SYSPRINT