3.5.5.1.2.2 Receiving a TXUSER_RESOURCEMANAGERINTERNAL_MTAG_DUPLICATEDETECTED Message
When the resource manager receives a TXUSER_RESOURCEMANAGERINTERNAL_MTAG_DUPLICATEDETECTED message, the resource manager MUST perform the following actions:
If the connection state is Recovering, Awaiting Completion Confirmation, or Active:
Inform the higher-layer business logic that the transaction manager has detected a duplicate resource manager registration.