IEF004I

Explanation
The system detected an error while processing a
VOLUME=REF reference to a DD statement with a UNIT=AFF reference.
In
the message text:
jobname
The name of the job.
procstep
The name of the step in the cataloged procedure.
stepname
The name of the job step.
ddname
The name of the DD statement.
+xxx
The relative position of a concatenated DD statement in relation
to the first DD.

System action
The system ends the job.

System programmer response
Look at the messages in the job log.
If the JOB statement did not specify MSGLEVEL=(1,1), specify it and
run the job again. If the  problem persists, search problem reporting
data bases for a fix for the problem. If no fix exists, contact the IBM® Support
Center. Provide the SYSOUT output for the job.

Programmer response
Check that the step name on the refer back
is unique. Check the  spelling of the names on the refer back and
the unit affinity request on the referenced statement. After correcting
the error, submit the job again.

Source
Allocation

Module
The detecting module is IEFAB42B.