Quary after intimation u/s 143 (1)

Rajesh Dhiman (taxpayer)     26 December 2020

I filed my ITR for AY 2020-21 with claiming tax relief u/s 89 for the arrears of salary of last two financial year . For that, I filled and submitted form 10E also before submiting my ITR. But now, I have received Intimation U/S 143(1) on 18/12/2020 in which they rejected my refund claim. Now, when I am going for rectification, the AY 2020-21 is not showing up proper reason in rectification column. Please guide what to do to relief claim u/s 89 (1).after rejection.