As far as I know, once you have the exam voucher, you can the book the exam at any center available in your country or take it from home in proctored mode, no matter which country you belong to.
If you want to double to check, you will have to post question in another forum.
Microsoft Certification / Exam / Voucher related questions are currently not supported on this forum. It's better to reach out to experts in a dedicated forum over here:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&cancelurl=%2Fen-us
Please don't forget to Accept Answer and Up-vote if the response helped -- Vaibhav