The following advice is issued in the interest of investors:
Safeguard your account from unauthorized transactions. Update your mobile numbers/email IDs with your stock brokers. Get all information related to your transactions directly from the stock exchanges on your mobile phone/email id, at the end of every day. KYC compliance is mandatory when you enter the securities market. It is a one-time exercise done through a SEBI-registered intermediary (stockbroker, depository participant, mutual fund, etc). There is no need to repeat the KYC process when you go to any other intermediary.
You do not have to issue a cheque while subscribing to an IPO. Write your bank account number clearly on the IPO application and sign it, sanctioning your bank to make payments when there is an allotment. Your funds will remain in your bank account in the case of non-allotment.