Hello Aspirant.

Hope you are doing well.

MI{Management Institution} Code is not necessary to select in MAT{Management Aptitude Form}. It is just asked because they just wanna see that for what you're capable of. But this matters from institution to institution maybe some of the institution demand MI code in the MAT form for the admission criteria according to their rules and regulations. But, it is not necessary to select the MI code in the MAT form.

FOR MORE INFORMATION ABOUT THE MAT ELIGIBILITY CRITERIA PLEASE CLICK ON THE LINK GIVEN BELOW;

https://bschool.careers360.com/articles/mat-eligibility-criteria

GOOD LUCK, STAY MOTIVATED AND HOPE THIS HELPS.

Thankyou.