The Master DTM exceeded the maximum wait time while waiting for all Worker DTMs to connect.
The master DTM process waited longer than the maximum amount of time allotted to wait for worker DTM processes to connect. The node running the worker DTM process may have failed, or connectivity to the worker DTM process may have failed. Or, the worker 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.