IEF031I

Explanation
This message is issued as part of IEF104I which
describes why Allocation could not  bring a device online. IEF031I
indicates that Allocation encountered a problem with the device that
was specified in the response to IEF238D. One of the following problems
occurred: The device was assigned to another system.
The device has a volume serial that duplicates another device
already online to the system.
Device is not accessible.
An I/O error occurred.
The device has NED value that is the same as that of another online
device. Refer to message IEF293I that is issued along with this message
for more information.

System action
The system attempts the allocation again.  If
a usable device has not been made available by other means, such as
an operator vary command, or deallocation by another job, the system
issues message IEF238D again.

Operator response
Reply to IEF238D, specifying a device number
that can be used on this system or one of the other options.

Source
Allocation

Module
IEFAB4ON

Routing code
2,3/4,7

Descriptor code
6