Intraday buy I was unable to do. What is the reason

I am doing trading in zerodha. I have tried to buy Rupa and Rain stock in MIS. But I was unable and it shows the message as RMS:Blocked for nse_cm RAIN_EQ MIS block

Rain and Rupa are unavailable for MIS trading. Check this list for stocks where 1x margin is given for MIS trading to enable short selling. And this is the regular intraday margin list.