3.2.5.3.7 Connection Disconnected
When a CONNTYPE_TXUSER_DTCLURMENLISTMENT is disconnected, the LU 6.2 implementation (section 3.2) MUST perform the following actions.
If the connection state is either Awaiting Enlistment Response, Active, Awaiting Backout Response, or Awaiting Transaction Outcome:
Return a failure result to the higher-layer business logic.
Otherwise, the event MUST be processed as specified in section 3.1.8.