Intimation under section 143(1)

Tanvi Sharda (45 Points)

21 January 2021  
assessee has received notice u/s 143(1) on 27.02.2020 for A.Y.2019-20 for not calculating education cess on tax liability.
but as tax rate is taken as per DTAA there should not be cess liability as per act.

How can I solve this query??
Rectification is possible in this case ??