184.108.40.206.2 Indicating Invalid Octet Stream in Server
When the RPC runtime determines that a network octet stream is invalid, it MUST indicate the failure to the client. The form of the indication is dependent on whether the RPC protocol variant used is connection-oriented or connectionless. For information about how a connection-oriented protocol variant returns a server unmarshaling failure to the client, see section 220.127.116.11.1. For information about how a connectionless protocol variant returns a server unmarshaling failure to the client, see section 18.104.22.168.1. In either case, the status code returned MUST be 0x6f7.
Details about Win32 error codes are specified in [MS-ERREF].