IEC135A

Explanation
U indicates that the tape volume indicated by ser
on a device is not file-protected.  That is, a program without RACF® output authorization or a
program accessing a password protected data set attempted to use the
volume for INPUT only and the tape’s file-protection ring is
inserted. Therefore, the volume is not completely write protected.
In
the message text: jjj
Indicates the job requesting the volume.
sss
Indicates the job step requesting the volume.
dsname
If a MONITOR DSNAME command is active, indicates the data set
requesting the volume.
dev
The device number of the specified device.
ser
The volume serial number.

System action
The volume is rewound, the device is unloaded
and the task waits for the operator to remount the volume or until
the task reaches time-out.  If a volume is mounted with its file protect
ring still inserted, the volume will be unloaded again and the message
reissued.

Operator response
Remove the file-protection ring, remount the
volume, and ready the device.
Start a generalized trace facility
(GTF) trace, and re-create the problem.  Reply to message AHL100A
with: TRACE=SYS,USR,SLIP

On the DD statement
for the data set in error, specify: DCB=DIAGNS=TRACE

System programmer response
If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the JCL, the program listing, the SYSOUT output for
the job, and all printed output and output data sets related to the
problem.

Source
DFSMSdfp

Module
IFG0194F

Routing code
3

Descriptor code
2