ITR2 Error : Schedule Salary, "Exempt allowance" no drop down can be selected more than once

I am getting below error while submitting ITR-2. I have only Salary and interest income and claimed exemption on HRA 10(13A), standard deduction and Professional Tax in the Schedule Salary. I have deleted all other sections in this schedule.  Please udpate on how to fix the same

Validation completed - 

Errors Found In Schedule Salary, at Sl. No. 3 "exempt allowance" no drop down can be selected more than once |  Suggession : One drop down cannot be selected more than once

and the hyperlink on the error is not clickable or going to the schedule where the error is.

Thanks.