If I have placed a limit sell orders at my target price level, I should be able to place stop loss limit order also for the same quantity at my stop loss price, isn't it? My stop loss order is getting rejected with this message, "EDIS QTY NOT AVAILABLE TO SELL INSUFFICIENT QTY"

Hey Sathya,

You can place either stop loss or target to sell your holdings. If you have a Target order placed then you'll not be able to place a stop-loss order as it'll be considered as a separate order. Short sell in CNC is not possible. Hence, your order is getting rejected.

Hope this helps!