IGGN502A

Explanation
During nucleus initialization program (NIP) processing,
a mount of a direct access storage device (DASD) volume is required
to access data set dsname.
In the message
text: dev
The device number of the specified device.
volser
The volume serial number.
dsname
The specified data set name.

System action
The system waits for the mount.

Operator response
Mount the volume on device dev.

Source
DFSMSdfp

Routing code
1

Descriptor code
2