3.3.5.3.5.2 Receiving a TXUSER_TRACE_MTAG_REQUEST_FAILED or TXUSER_TRACE_MTAG_TX_NOT_FOUND Message
When the application receives one of these messages, the application MUST perform the following actions:
If the connection state is Awaiting Trace Response:
Return a failure result to the higher-layer business logic.
Set the connection state to Ended.
Otherwise, the message MUST be processed as an invalid message as specified in section 3.1.6.