I am unable to place an option order thro' kite connect. It fails with error "kiteconnect.exceptions.InputException: Unknown `tradingsymbol` even though the symbol is from the kite instruments. The following is the place order construct in python. order_id = kite.place_order(variety=kite.VARIETY_AMO, tradingsymbol="HDFC21SEP2800CE". exchange=kite.EXCHANGE_NSE, transaction_type=kite.TRANSACTION_TYPE_BUY, quantity=1, order_type=kite.ORDER_TYPE_LIMIT, price=23.8, product=kite.PRODUCT_NRML) I tried changing the exchange to NSE or prepend trading symbol with NFO: but still it fails. I have tried using EXCHANGE_NFO but to no avail.