There is inconsistency between salary income in return, 26as

Hi,

Received initmation from IncomeTax CPC today that processing of last years ITR is not completed because there is inconsistency between salary income in return and Form 26AS

The "Total Amt Paid/Credited" in 26AS shows as 1980727. The Amount shown in Form 16 is as follows - 1. Gross Salary 1980727 ; 6. Income chargeable under Head Salary : 1676649 (after deduction of allowance under u/s 10).  How should I respond to the notice? Should I disagree to the notice and if so what option should I choose "Others" and mention "While filing return I considered Head of Salaries" as my income since Rs 304078 was allowance deducted under u/s 10 (HRA) by my employer and attached my Form 16?

Thanks in advance?