TPIN stands for Transaction Personal Identification Number.
CDSL has introduced TPIN, which will enable investors to authorise selling securities from their demat accounts virtually.
For Non POA clients, TPIN verification will be valid for 1 day.
Once you generate TPIN, it will be valid till you generate it again. Hence, please make a note of your TPIN for quicker verification.
An OTP will also be required apart from TPIN for selling shares from demat account.