if I attempted to purchase it present this msg: Use MIS (Intraday) to commerce all possibility strikes with no place conversion (MIS to NRML). This can act as a danger administration test, guaranteeing you don’t maintain any dropping intraday positions in a single day. NRML purchase orders are blocked for this strike worth as a result of open curiosity (OI) limits prescribed by SEBI. You may exit present positions or place NRML purchase orders between 18050 – 18600.
However i attempted to purchase 18900
As defined within the message you shared, you should purchase choices solely inside the vary of 18050 – 18600. Since 18900 is exterior of the allowed vary, the order was rejected.
We enable shopping for choices of any strike for hedging functions in case you maintain a brief possibility place, to the extent of amount shorted. The restriction is for bare lengthy choices as a result of member-level OI restrict. Defined intimately right here: Why am I not in a position to place Financial institution Nifty, Nifty possibility orders for sure strike costs?
If you wish to commerce with out strike worth restrictions, we’ve another answer for this: How do I open an Orbis custodial account to commerce restricted Nifty and Financial institution Nifty strikes?