IOS159I
IOS1159I PATH cc, THE FOLLOWING DEVICES ARE NOT AVAILABLE FOR USE: SUBCHANNEL SET: 0xxxx,yyyy-zzzz, .... SUBCHANNEL SET: 1xxxx,yyyy-zzzz, ....

Explanation

A dynamic configuration change from another partition caused the system to delete a path to the specified devices.

In the message text:
cc
The channel path identifier.
SUBCHANNEL SET: 0
The subchannel set identifier.
SUBCHANNEL SET: 1
The subchannel set identifier.
xxxx,yyyy-zzzz
The specified devices.
Note: If only a single device is not available, then message IOS155I is displayed.

System action

The system marks the path offline to all specified devices. The path definition is removed from the system.

Source

Input/output supervisor (IOS)

Module

IOSRSCH