3.3.3.5.1 Failure Semantics

If the server encounters an error during the processing of a method call on the server, it SHOULD send back to the client a fault PDU, as specified in [C706] section 12.6.4.7, where the status field of the fault PDU is set to a descriptive status code. If the server is unable to send a fault PDU as specified here, it MUST close the transport connection. The exact protocol primitive used for closing a transport connection depends on the RPC transport and is documented in the normative reference for that transport.

Servers can send any status code in the status field of a fault PDU except the following status codes, which a server MUST NOT send to the client. These status codes have special significance, and their presence in the status field MAY be flagged as a protocol error by the client.