Thank you Franklin for these steps. What should I do if there are more than 200 devices of this type? This is not an option as it creates more manual work.
The odd thing I am observing is, few alarms on the same probe are having the server name as host name whereas few are having the IP Address.
For now, instead of using the Name Service, I am testing it with Nas probe --> Name Service --> Enable Name Services --> Use NMS RobotName as Hostname (if available). Hope this works.
Please let me know if there are any other options.
Regards,
Rajashekar