RMS policy on options selling
OTM Strikes beyond a certain range can become extremely illiquid and can cause freak trades due to the wide bid/offer spreads. Therefore, as per our RMS policy, a restriction has been placed for option selling outside the allowed range and if you are an Index options buyer, there is no issue.
Index options strike range allowed for selling – 20%
Stock options strike range allowed for trading – 10%
https://fyers.in/support/article/what-is-fyers-rms-policy-on-fno-trading/204