Hey Rahul,
the symbol NSE:SBIN-EQ is correct and I am getting the historical data for it. Can you send a screenshot of your code.
Only one symbol can be passed for historical API.
Hi Vikram, I’m facing a similar issue, but with a different symbol. Im getting error when I use NSE:BANKNIFTY21AUG36000CE, Can’t we get previous week options history? I needed this for bacl testing my strategy. (Note NSE:BANKNIFTY2190236000CE is working fine)
After some struggling, I came to understand that fyers do not provide option data except the current week. So either u have to pay for their premium third party services or else wait for every Friday. Collect all the data once and store it in a database
After a couple of weeks you will have some historic data to do your back testing.