IEF008I

Explanation
The system detected a volume serial number that
was not valid for a direct access storage device (DASD) during allocation
processing of one of the following:
A VARY online command
An offline device that was selected for the VARY command either
by response to message IEF238D or the allocated/offline installation
exit.

In the message text: devnum
The direct access storage device.

System action
The system does one of the following:
For the VARY online command, the system leaves the requested device
online.
For an offline device that was selected for the VARY command,
the system leaves the device offline, and issues message IEF490I followed
by message IEF238D.

Operator response
Notify the system programmer of the problem.
 If the problem occurred because of:
The VARY online command, select another device.
For an offline device that was selected, either reply to message
IEF238D with another device from the list displayed by previous messages
IEF448I, IEF877E or IEF878I or reply 'CANCEL' to cancel the job.

System programmer response
Ensure that the device is functioning
correctly.  Verify that the device has a correct standard label. 
If necessary, refresh the volume label and try to vary the device
online so that the system can attempt to verify the volume serial.
 Further errors can indicate that the device experienced a hardware
failure; in this case, contact hardware support.

Source
Allocation

Module
IEFAB4F8

Routing code
*

Descriptor code
/