Hello,
There is no facility to change the exam center for IISER 2020 exam. There is no correction window so you cannot make changes. I would suggest you to contact the officials and ask them if you can make changes. You will get the contact details in the official website. Please click the below link to know more.
https://engineering.careers360.com/articles/iiser-admission
Eligibility | Application | Exam Pattern | Admit Card | Result | Answer Key | Counselling | Accepting Colleges
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile