Personal loan interest....

Respected Sir / Madam.,

A individual Assessee wrongly taken the interest paid amount on Personal loan Rs. 50k in his ITR for the AY 2016-17. But the Personal loan amount Rs. 3L and its using business.

Now., I got the books f accounts and found the details. In this situation

What are the steps taken myself for filing ITR...?

Can I reverse the Interest amount Rs. 50k in AY 2017-18 for wrongly taken in AY 2016-17? or

Can I continue taken the Interest amount as Expenses...?