AY is wrongly selected

babita paliwal (Student CA Final ) (124 Points)

14 April 2016  

Dear sir/madam one of my client has filed his income tax return of a.y. 2014-15 on 28/07/2014. In this return he deposited tax of Rs. 2500 as self assessment tax but he selected a.y. of 2013-14 in challan by mistake. In process of income tax return this tax deposited amount is not considered and generated a demand of Rs. 2500 plus Interest.the client has filed his income tax return of A.Y. 2013-14 on 22/06/2013. In this return the client has not claimed this Rs. 2500. please suggest me how to rectify this mistake and to whom give application to rectify this ?