IXC429W

Explanation
The system IPL is unable to continue because one
of the names being declared by the operating system was already declared
via logical partition definition at the hardware console, and the
previously-declared name does not match the name being declared by
the operating system.
In the message text: text
One of the following:OPERATING SYSTEM
XCF was declaring the operating system name.
CHANNEL PATH MANAGEMENT
XCF was declaring the channel path management name.
CPU MANAGEMENT
XCF was declaring the CPU management name.

name
The system or sysplex name which was being declared.

System action
The system enters a non-restartable wait state.

Operator response
Notify the system programmer.

System programmer response
Determine the reason for the mismatch
of the indicated name between the name that was declared for the partition
via logical partition definition and the name that is to be declared
by the operating system (which is either the system name or the sysplex
name).
Correct the mismatch by one of the following: IPLing the system into the logical partition which has a system
name or sysplex name that matches the name being declared, or
Modifying the logical partition definition to make the declared
name match the system name or the sysplex name that will be declared
by the operating system, or
Modifying the system name or sysplex name for the system being
IPLed so that it matches the existing names declared via logical partition
definition.

Once the mismatch has been corrected, re-IPL the system.
If the system name in the logical partition definition has changed,
in order for that name change to take effect, you must re-activate
the logical partition before you can re-IPL the system.

Source
Cross System Coupling Facility (SCXCF)

Module
IXCI2PH3

Routing code
1, 2, 10

Descriptor code
1