3.1.5.1.1 Receiving a wsignin1.0 Request That Does Not Specify a ttpindex

When the IP/STS receives a wsignin1.0 request that does not specify the ttpindex parameter, the response MUST NOT use the Query String Response Transfer Protocol. The IP/STS MUST discard any pending result, and the IP/STS MUST process the message as specified in [MS-MWBF] section 3.1.5.4.