What is Authentication Code?
Authentication code is generated when you clear validation details for a statement for certain functionalities such as Download Form 16 / 16A, Download NSDL Conso File, Download Justification Report, etc. Authentication code generated for a particular statement will be valid for the calendar day (i.e., an authentication code generated on 10-Dec-2012 can be used only on 10-Dec-2012 to clear validation details for the same statement. It will not be valid the next day).
What is the advantage of Authentication Code?
Authentication Code is generated to facilitate users to avoid filling up of validation details repeatedly in case user logs in again at different time of the day.