CDSL TPIN authorizations are only good for a single day.
From 8:00 a.m. to 5:00 p.m., all authorisations for the same day's trades will be logged.

After 5 p.m., you can place After Market Orders (AMO) for the next day by taking a pre-authorization of your holdings at the time of placing the order. Unless you change the order, holdings authorization will not be required for such AMO orders the next day.
For any other orders, you will need to obtain new authorization every trading day after 8 a.m.
All CDSL TPIN authorisations made outside of the stated times (after 5:00 PM and before 8:00 AM, except for AMO) will be ignored, and your orders will be denied.