My sell order was rejected with the reason "Intraday/BTST is not allowed in scrip", Why?

"Intraday/BTST trading is not permitted in scrip," the rejection reason said. You can sell the stock once it has been delivered to your account.

In the following situations, orders for intraday and BTST (Buy Today Sell Tomorrow) are blocked:

1. The stock has the T2T classification.
   

2. Short delivery is quite likely since the stock is illiquid.
   

3. There are several ETFs and exchange-traded debt products that cannot be traded during the day.