This topic describes factors that require special attention when you use express synchronization on a versioning-enabled bucket.
If you delete an object in a versioning-enabled bucket without specifying a version ID, the deletion does not trigger the DeleteObject or DeleteObjects event notification. This is because a request that attempts to delete an object from a versioning-enabled bucket without a version ID specified does not delete any object version. Instead, the current version of the object is made a previous version and a delete marker is added as the current version of the object. As a result, Cloud Storage Gateway detects no deletion operation on the object.