Hello aspirant,

I hope that you are doing absolutely great.

With reference to your above mentioned query, I would like to tell you that if you don't report in your first allotted college that you get in the first round of Maharashtra MBBS counselling in specific period of time, then your admission in that college shall stand cancelled and the seat will be allotted to the other candidate.

Similarly, if you don't lock your choice or you don't report to the college you get in teh second round of counselling your admission shall stand cancel and the seat will be allotted to the other candidate

Further, for more information about the MBBS counselling, you can follow the below mentioned link :

https://medicine.careers360.com/articles/maharashtra-mbbs-counselling

I hope that this will help.