3.3.5.7.7 Receiving an XAUSER_XACT_MTAG_OPEN_NOT_FOUND Message
When the XA Superior Transaction Manager receives an XAUSER_XACT_MTAG_OPEN_NOT_FOUND message, it MUST perform the following actions:
If the State field of the XA Transaction Object referenced by the receiving connection is set to Suspended:
Signal the Disconnect Connection event using the receiving Connection as the argument.
Return XAER_NOTA from xa_start call.
Otherwise:
Signal the Disconnect Connection event using the receiving Connection as the argument.