Hello Karuna 

Well you have to go in the review section of your form. There you are required to fill the course in which you want to do your MBA. All you want to do is try to refresh it and then enter the details. Or else you may require to contact to the administration department.

To get more information you need to share the college name as different college have different set of form to be filled. 

You may also try to leave it blank as it may be asking for the person who have done with their post graduation and aspire to do MBA. 

So you don't worry just follow steps sequence wise and submit it. 

Good luck for your career ahead.