After changing the fully qualified domain name (FQDN) of a vCenter instance, Aria Automation is unable to complete data collection and you cannot manage resources associated with it's Cloud Account.
VMware Aria Automation 8.x
Aria Automation identifies Cloud Accounts based on FQDN and associated certificate. Changing of a vCenter FQDN will cause Aria Automation to lose track of the endpoint and the ability to manage it.
Changing of the vCenter FQDN of an active, managed Aria Automation Cloud Account is unsupported action. To resolve this, there are two options.
Revert your vCenter FQDN and associated certificates and update the Cloud Account to ensure that the endpoint is trusted and active again.
The alternate option is to rebuild the Cloud Account in Aria Automation: