As mentioned in the error the tradingsymbol is wrong. You can find the correct tradingsymbol from the instruments master file.

It's already updated on the instrument file.

You can refer to the documentation here.

You seem to be sending the wrong tradingsymbol, you can check the correct tradingsymbol from the instruments master.

You can refer to the samples and dotnet doc here. You need to use the instrument list to fetch lot-size column details.

https://kite.trade/docs/connect/v3/market-quotes/#instruments

https://kite.trade/docs/connect/v3/market-quotes/#instruments

Hey @rajeshpoddaturi

Go through the instruments-related FAQs here.

You need to use NSE: NIFTY 50 with space between nifty and 50. You need to use the trading symbol from the instrument file.

It is a monthly BANKNIFTY instrument and not weekly instrument, you can find the correct tradingsymbol in the instruments master.

You can check all the instrument tokens from the instruments master.

The instrument you are placing an order for has either expired or does not exist.

You can download the instruments master and check the instrument token.

This instrument is migrated to BE, so the correct symbol would be BLAL-BE

You can fetch all the instruments token here.

tradingsymbol="NIFTY23420APR17650CE",

how i can get strike price for nifty

You can use the full instruments list and filter out contracts based on your required condition.

Why specifically are you looking for historical tokens? Continuous historical data?