Hello Aspirant,

See you need not to take much panic for this issue because the mistake has been done by your side and now you don't have any option to correct it. So if the spelling of your last name is incorrect then you can appear in exam but you should carry your valid ID proof along with your Hall ticket and as of now the exam has been scheduled from September 16th so by that time you can reach out to the help desk of BITS Pilani regarding your issue so that if any correction would be needed they might help you.

For more information kindly refer to the link given below :-

https://www.careers360.com/exams/bitsat

I hope this information helps you.

Good Luck!!