The format of data in LOGDATA varies, depending on the logon mechanism being used. However, to take effect, LOGDATA must be specified (with a LOGMECH statement) before LOGON.
The data that is required by the logon mechanism is defined as logon-data, as seen in the syntax diagram above. This logon-data must be valid for all of the Teradata ARC sessions that will be logging on. For most logon mechanisms, logon-data is case-sensitive, and it must be enclosed in double quotes if it contains any white space characters or non-alphanumeric characters.
For more information about extended security mechanisms and LOGDATA, see Teradata Call-Level Interface Version 2 Reference for Workstation-Attached Systems (B035-2418).