Please update feature to place order with NSE or Bse symbol not with instrument_key.
For placing order everything should be independent of instrument list.
To place order make it generic so that orders can be placed in faster manner and without dependent on any kind of list or instrument key.
For this version, we would be accepting instrument token in the place order which is also a standard practice among brokers.
However, having said that, we will take this as a feedback once we go for further. You can find more details regarding this in this community thread: Placing option order using API