CMMVC4178W You have requested to start the FlashCopy consistency group CONSISTENCY_GROUP, but at least one of the FlashCopy mappings in the specified FlashCopy consistency group is not in the Prepared state. You must prepare a FlashCopy mapping before you can start it to ensure that any source virtual disk (VDisk) data that is residing in cache is flushed to disk before the FlashCopy mapping is started. Click Prepare and Start to prepare the FlashCopy mappings in the specified FlashCopy consistency group that are not in the Prepared state and then start the FlashCopy consistency group, or click Cancel to cancel the operation and return to the previous panel.