IXC420D

Explanation
This system is trying to initialize or join a sysplex,
but cross-system coupling facility (XCF) found one or more systems
that appear to be part of an existing sysplex sysplex-name.
XCF determined that this system cannot join the existing sysplex because
of reasons specified in preceding messages. This message prompts the
operator to decide whether the systems identified in message IXC404I
are actually active in the sysplex and whether initialization should
continue.
In the message text: sysplex-name
The name of an existing sysplex.

System action
Sysplex initialization processing stops until
the operator replies to message IXC420D.

Operator response
Choose one of the following replies: I
To request that sysplex initialization continue because none of
the systems identified in message IXC404I are participating in an
operating sysplex. This system will perform cleanup of old sysplex
data, initialize the couple data set, and start a "new" sysplex. If
any of the systems identified in message IXC404I are currently active
in the sysplex, they will be placed into a disabled wait state.Beginning with z/OS V1R9, replying 'I' does not purge
information pertaining to inactive systems from the sysplex couple
data set. This information is retained for the benefit of systems
management applications.

R
To request that XCF be reinitialized.  XCF will stop using the
current couple data sets and issue message IXC207A to prompt the operator
for a new COUPLExx parmlib member. Choose R also to change
the sysplex name and reinitialize XCF to remove any residual data
for this system from the couple data set. The system prompts the operator
for a new COUPLExx parmlib member.

 If an incorrect reply is entered, the system issues
message IXC208I to notify the operator of the error. The system then
reissues message IXC420D.

System programmer response
Check all the systems displayed in
message IXC404I to determine if they are operative and if this system
belongs in a sysplex with them.

Source
Cross System Coupling Facility (SCXCF)

Module
IXCS2IN

Routing code
1, 2

Descriptor code
2