The Master DTM connection with the Worker DTM running partition group <partition group ID> was broken unexpectedly. The Master DTM will abort processing.
The master DTM process detected that a worker DTM process failed unexpectedly.
View the workflow log to see if the DTM process started on the node. If the DTM process started and shut down unexpectedly, the error is internal. If the error is not internal, contact the Network Administrator to verify that the network does not have connectivity issues. Contact the domain Administrator to verify that the Integration Service is running. Run the session again.