188.8.131.52 Releasing a Server Object
The client MUST send a RopRelease ROP request ([MS-OXCROPS] section 184.108.40.206.1) to release the Server object after executing all subsequent operations on the folder that was created or opened. Likewise, the client MUST send a RopRelease ROP request after executing all subsequent operations on a contents table or a hierarchy table.
If the client does not send a RopReleaseROP request, the server does not free the resources associated with the Folder object or the Table object. For details about Server object dependencies and releasing resources, see [MS-OXCROPS] sections 220.127.116.11 and 18.104.22.168.