As per CDSL communiqué, kindly update your Email ID, Mobile Number and Income Range in your CDSL Demat Account on or before 31st May 2021. Non-compliant accounts will become inactive after 31st May 2021.  |  Prevent unauthorized transactions in your Demat account by updating your registered mobile number with your Depository Participant. Receive alerts for all debit and other important transactions directly from CDSL.  |  No need to issue cheques while subscribing to an IPO. Simply authorize your bank account in the application form.  |  KYC is a one-time process. Once completed through a SEBI-registered intermediary, you do not need to repeat it with another intermediary.  |  Update your mobile number and email ID with your stock broker to receive transaction alerts directly from the Exchange.