You are seeing below error in service logs.
SEVERE -- [2026-03-05 03:17:27 GMT] -- AbstractEventListener$ConnectWorker::run(): An unknown error has occurred while connecting to source <GSAM>. Retrying in 30 seconds.java.lang.RuntimeException: Data file mrerrorbe67aa28be.dat is corrupt. at com.ibm.icu.impl.SmICUResourceBundleReader.readResource(SmICUResourceBundleReader.java:347)
All supported releases of Smarts and Watch4net|M&R
The Notification List (NL) configured in the respective smarts-listener.xml for GSAM does not exist.
Either create NL in the GSAM (as configured in smarts-listener.xml) OR update smarts-listener.xml with existing NL in the GSAM.