SHARD_DEMOTION_CWOBJ1547=CWOBJ1547I: {0} (demoting {1} to {2}) in transition.
Explanation
Specified shard is in a transitional state. The message indicates the state of the shard, and the state that the shard will become after the transition completes. There is likely an additional message printed later in the log indicating the new state of the shard.
User response
No action is required.