If a dumped SysObject is associated with a retainer, the dump operation also dumps the retainer. Retainers record retention policy definitions.

If a retainer object is dumped directly, the object identified in the retainer_root_id property of the retainer is also dumped. That object can be a single SysObject or a container, such as a folder. If it is a container, the objects in that container are not dumped, only the container itself is dumped.