CMMVC8646E: The active-active relationship could not be created, either because the master or auxiliary volume is the target of a FlashCopy mapping or because the master or auxiliary volume is the source of a FlashCopy mapping with a target volume in a different site.

Explanation

The active-active relationship could not be created because:

The master or auxiliary volume is the target of a FlashCopy mapping.
The master auxiliary volume is the source of a FlashCopy mapping with a target volume in a different site.

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