IEF786I

Explanation
A system error occurred while the system was verifying
the internal volume label of a tape volume on a tape device.
In
the message text: ser
The volume serial number of the tape volume for which the verify
attempt failed.
dev
The device number of the tape device where ser is
mounted.

System action
The system unloads the tape volume unless the
verify was on behalf of a VARY command, and then requests an SVC dump.
If the verify was on behalf of the VARY command, the volume is not
unloaded.

System programmer response
Search problem reporting data bases
for a fix for the problem. If no fix exists, contact the IBM® Support
Center. Provide the SVC dump.

Source
Allocation

Module
IEFAB473

Routing code
*/3

Descriptor code
4/5