vCenter upgrade Pre-Check fail with “VMDir replication is not working correctly”

When I tried to upgrade my vCenter to the last version of 8u3 on the pre-check command, I found this error

Because I attached another vCenter at the same PSC, it is now broken.

For deleting the missed vCenter:

Take a vCenter snapshot

Check the vCenter name:

The name is vcenter02.pollaio.lan

Remove the old vCenter:

After automatic service restart

Now the upgrade pre-check does not have an alert message

Reference

vCenter Server Preupgrade check result error: “VMDir Replication between partners is not working”