Ktpass is a Microsoft program that creates the encryption keys that the KDC uses to negotiate KRB5 or SPNEGO logon transactions between a Teradata Vantage and the networked clients.
Run ktpass once on the KDC for each Vantage node SPN that you created in Determining the SPN for Each Node. Note that the procedure for the first database node is different from the procedure for all other nodes.
After creating the keys, you must copy a set of keytab files for each KDC to each Vantage system. See Installing the Kerberos Keys.