Hello,

• Stray Vacancy Round is the  whole process of allocating seats for eligible students to get admission in medical colleges are started with NEET Counseling after the results were announced.
• It is also known as the institutional Mop-up round for students who didn't get admission anywhere.
• Stray vacancy round conducted on State level/college level/university level.
• There is no bounds for this counselling and any students with eligible score can take part.

https://medicine.careers360.com/articles/neet-counselling

Hope this helps!!

You can visit the official site for any FAQ.