Please check if the F&O derivatives segment is activated for you. 


To do this, please follow the steps below

  1. Click on Ctrl+E
  2. Select Account and enter your Client ID (UCC) 


Double click on your name and check exchanges - (NFO should be enabled) - 

If yes and still not able to add scrip of F&O then clear the app data and check


To learn how to clear your app data, you can follow along with a similar problem-based article here.