Do certification exam vouchers have an expiration date? Grace Sakurada March 27, 2018 14:24 Updated All certification exam vouchers expire 6 months from the date of issue. Related articles Where is my MuleSoft.U certification exam voucher? I finished my instructor-led, training class, but have not received my exam voucher. What is the cost of each MuleSoft certification exam? What is the retake policy for certification exams? What if I haven't received my retake exam voucher?