CMMVC6470E The Start or Prepare FlashCopy mapping task cannot be initiated because the target VDisk is being used by a different FlashCopy map.

Explanation

You cannot start or prepare a map while the target of the map is also the target VDisk of another map that is in one of the following states: copying, stopping, suspended, prepared or preparing.

Action

Ensure that the target VDisk in the map that you are attempting to start or prepare is not the target VDisk of another FlashCopy mapping that is in one of the unsupported states when you submit this task.