I recently added a new APIC to an existing VNA Collector and ran a full sync in Spectrum. The inventory got synced but not the faults/alarms.
There are two more APICs on the same collector running 3.2 version and they are showing up fine but this new APIC is running 4.2 (5n) version and is not showing faults.
I ran a DB query like below and not finding any faults in the DB.
select * from notifications where userDomainId='xxx'; shows a full list of faults for the working domain ID but nothing for the userdomainID for the new APIC.
The Fault_Subscription_enabled field in the configuration was set to false.
Release : 20.2
Component : Virtual Network Assurance For CA Spectrum
I reconfigured for the Fault_Subscription_enabled field in the config to "true" and recycled wildfly.
I can now see the faults coming in.