After publishing the operations manager plugin to the desired tenants we see the plugin shows "Unable to Authenticate" error.
VMware Cloud Director 10.6.x
This issue is seen in the VMware Cloud Director tenant portal, if we login with the System Administrator user credentials.
This is an expected behavior since the System Administrators do not have access to the Operations manager plugin.
To resolve this issue, Login to the tenet with the Organization Administrator credentials and the access must go through.