there are 2 causes here:
spectrum was previously added as a data source and then improperly removed.
also, we see this error in the DM wrapper.log:
INFO | jvm 1 | 2018/07/31 05:11:09 | | Received WebServiceException from version check for data source Spectrum Infrastructure [email protected]
CAUSE=java.net.UnknownHostException: UnknownHostException invoking http://*****:8888/axis2/services/DataSourceWS: <hostname>. MESSAGE=Could not send Message.. Returning DS_COMM_FAILURE result.
INFO | jvm 1 | 2018/07/31 05:11:09 | ERROR | qtp680829177-168120 | 2018-07-31 05:11:09,000 | com.ca.im.portal.api.services.datasource.DataSourcePoll
INFO | jvm 1 | 2018/07/31 05:11:09 | | javax.xml.ws.WebServiceException: Could not send Message.
this is caused by communication failure.