In order to keep your trading account functional, you need to have at least one demat account linked with it. If you have several demat accounts linked to your trading account, then you can close the extra demat accounts and keep one linked to the trading account.
Clients are requested to be informed about the availability of the facility for online closure of trading and demat accounts at KSL. The guidelines for the same can be referred here: NSE BSE NSDL CDSL. Please also refer to the website of the Exchanges and Depositories to be updated on the latest guidelines, as may be amended from time to time by the regulators. In case of any queries, you may contact our designated customer service desk.