Errata exists for this version of the document.

This Service is used to terminate a Session. The Server takes the following actions when it receives a CloseSession request:

1. It stops accepting requests for the Session. All subsequent requests received for the Session are discarded.
2. It returns negative responses with the StatusCode Bad_SessionClosed to all requests that are currently outstanding to provide for the timely return of the CloseSession response. Clients are urged to wait for all outstanding requests to complete before submitting the CloseSession request.
3. It removes the entry for the Client in its SessionDiagnosticsArray Variable.

When the CloseSession Service is called before the Session is successfully activated, the Server shall reject the request if the SecureChannel is not the same as the one associated with the CreateSession request.