Revise the TdgssUserConfigFile.xml to include the elements and properties required to support authentication using multiple directory services. See Adding Multiple Directory Services to the TDGSS Configuration. Verify the setup using tdgssauth or tdsbind, and once verified, commit the changes by running tpareset. See Completing the <LdapConfig> Configuration Change. If users log on through Unity, duplicate the configuration on the Unity server and all connected database systems. See Using <LdapConfig> with Unity. Configure Teradata directory objects and make directory user mappings in each authenticating directory, based on the directory features used.