vSphere 8 Enterprise 8 for VCF license on Aria Operations (Administration -> Legacy License) does not show ENTITLED and you see this error:
"vCenter was deleted"
The license has been applied on the vCenter Server as per this KB.
The vCenter where the VCF license is applied is part of Aria Operations (Administration -> Integrations) and is collecting.
The user used for the vCenter integration on Aria Operations is part of the LicenseService.Administrators group on vCenter.
Aria Operations 8.18.x
The issue occurs if the vCenter with the VCF license was removed from Aria Operations at some point.
To resolve the issue, please follow the below steps after taking snapshots of all Analytics nodes in the Aria Operations cluster as per this KB.