The Master DTM timed out after <time in seconds> seconds while trying to connect to the Preparer DTM.
The master DTM process timed out attempting to connect with the preparer DTM process. The master DTM and the preparer DTM processes may be running on separate nodes and there is a network failure. The preparer DTM process may have shut down 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.