SHARDS_LEFT_ON_TERMINATE_CWOBJ1129=CWOBJ1129W: Some of the shards were not removed before the container terminate completed on {0} container. Shards left: {1}
Explanation
A call to terminate the container attempted to destroy all of the shards on the container, but shards still remain on the container. A shard might not have been destroyed, or a new shard might have been placed as the shard was destroyed. Any shards placed on the terminating container fail over to other containers.
User response
Verify the placement using the administrative tools, for example review placementStatus data.