Hey, at Zerodha, in line with exchange regulations and our RMS policy, trade restrictions are placed on the exchange’s list of unsolicited SMS stocks. You can keep track of the blocked stocks here
You can check the historical and current exchange list of unsolicited SMS stocks here.
Check out this post to learn how investing in unsolicited SMS stocks can be detrimental.
If you have invested in such stocks, you will be able to sell as you do normally.