To resolve this issue, remove references to the orphaned vCenter Server instance from the platform service controller and delete the orphaned vCenter Server virtual machine if it is still in the vSphere inventory.
cmsso-util unregister --node-pnid vCenterServer_System_Name --username administrator@your_domain_name --passwd vCenter_Single_Sign_On_password
Note: In the previous example, vCenter_Server_Appliance_System_Name is the FQDN or IP address of the vCenter Server Appliance that you want to decommission. You must run this command only on the Platform Services Controller appliance with which your vCenter Server Appliance is registered.