IGGN507A

Explanation
During nucleus initialization program (NIP) processing,
a dismount of a direct access storage device (DASD) volume or a tape
volume with IBM® standard labels
is required.
In the message text: dev
The device number of the specified device.
volser
The volume serial number.

System action
The system continues processing.

Operator response
Dismount the volume volser on
device dev.

Source
DFSMSdfp

Routing code
1

Descriptor code
2