So far, I have done following and let us hope this will get rid of these unwanted alarms:
1. Administration / Dashboards / Job Dashboard. Go under System Jobs, APIC-EM Integration, selected the APIC-EM Site sync, and then clicked on pause series to suspend the schedule. Did a application service NCS stop and start and this service remains suspended.
2. At the same place, under system Jobs, Infrastructure, selected last service of Post PNP image upgrade and paused / suspended the service.
3. Administration / System settings / Network and Devices, Unified AP reachability and chose to disable it.
Need to wait to see if any more services fire up alarms.
Thanks