From IIFL (Easier)
Go to Sell Authorisation flow on IIFL, and click on Forgot CDSL PIN
Go to CDSL website, enter your BO ID and PAN to generate a new one.
Please Note: You can only use a TPIN after 6 minutes once generated
? What is BO ID and where do I find it?
The BO ID (Beneficiary Owner Identification number) is a 16-digit number used to identify your demat account. Go to Dashboard > My DP > DP profile and the DP id is your BO ID.
? How do I know what mobile/email is registered?
The registered email/mobile number is the same as what appears under DP Profile.
? I don't have access to this mobile/email anymore, what do I do?
You can edit the details of the mobile number or email address on your profile and then reset/regenerate the pin again to receive it.