Good till triggered orders (GTT)

Normal order types like MIS, CNC, SL, SL-M are only valid for a day. If these orders aren't executed today, all the orders will be cancelled. Meaning, if you want an order to remain active until a condition is met, you will have to place order everyday. This is where GTT orders come in. GTT orders remain active until your trigger is met. For example, let's say you bought RELIANCE at Rs 2000 and you set a stop loss at Rs 1500, the GTT order will remain active until the SL level is hit.

For more on GTT: https://support.zerodha.com/category/...