A structure remains "change pending" until it is allocated under the new
CFRM policy.  In the case of a duplexed structure, both instances of the
structure need to be allocated under the new policy.

So if your structure is currently duplexed, you need to stop the duplexing
rebuild (keeping either instance).  At this point you have a single instance
of the structure (presumably) allocated under the old policy.  Rebuild the
structure to get it allocated under the new policy.  Then start a duplexing
rebuild to get the second instance allocated under the new policy.

Some assumptions apply to the above process.  For example, I assume both
instances were allocated under the old policy.  It could instead be the case
that the old instance of the duplex pair was allocated under the old policy
and the new instance was allocated under the new policy.  In that case,
applying the principle of "each instance must be allocated under the new
policy", one could then stop the duplexing rebuild keeping the new instance,
and then simply start a new duplexing rebuild.  I'm also making the obvious
inferral that both the old and new policies allow the structure to be duplexed.

Mark Brooks
z/OS Sysplex design and development

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