GTD refers to ‘Good Till Day’. In the event that these orders do not get executed immediately, they remain pending until the end of the trading day. After which, the exchange cancels all the pending orders.
Kindly make sure you read the account opening documents as prescribed by SEBI. Secure your account from unauthorized transactions by updating your mobile numbers/email IDs. Receive information directly from the Exchange on your mobile/email at the end of the day. Issued in the interest of the investors. In case a client has any query/feedback/clarification/complaint write to firstname.lastname@example.org. A client can also opt to write to NSE here or MCX here or BSE here.