Your Aadhaar number
Your PAN number
Your demat account number i.e. DP ID and Client ID.
Access to your mobile or email to receive your OTP. Your name as recorded on Aadhaar card should be exactly same as the name as recorded in your demat account. This will enable authentication with UIDAI database. Click on https://aadhaar.nsdl.com/AdhaarSeeding/ and update your Aadhaar in all yourdemat accounts with NSDL or visit NSDL website https://nsdl.co.in/