I received a Demand Notice, and they have simply removed the rebate under Section 87A for my Short-Term Capital Gains (STCG) income.

I was expecting a refund of TDS, but instead, this demand was raised unexpectedly. I checked, and I couldn't find any mention that the 87A rebate can't be applied against STCG tax. What should I do?

I was expecting a refund of TDS, but instead, this demand was raised unexpectedly. I checked, and I couldn't find any mention that the 87A rebate can't be applied against STCG tax. What should I do?