After updating the vCenter adapter credentials in VMware Aria Operations from administrator@vsphere.local to an Active Directory service account, all service objects within the Service Discovery Adapter show a status of "Unknown."
VMware Aria Operations 8.18.x
The newly configured Active Directory service account did not have the necessary permissions within the vCenter/VMware Cloud Foundation (VCF) environment, leading to the Service Discovery Adapter being unable to retrieve service object data.
To resolve this issue, add the Active Directory service account to the VCF admin group
If issues persist after adding the account to the VCF admin group, verify that the account has the necessary privileges within vSphere.
For further assistance, reach out to VMware by Broadcom Support.