When you verify that the Kerberos setup is complete, log on from a Vantage client using BTEQ or another application and specify the KRB5 mechanism for all logon variations that your site allows, both directly to the database and through Unity (if used), to verify that Kerberos setup parameters are correct.
For information on allowable Kerberos logon variations, see the sections on Single Sign-on and Sign-on As in Logging on to Teradata Vantage.