The expiry time of CSWA Exam code obtaining from SolidWorks Student version purchase

Hi, I have bought a student version of SolidWorks and I also received two exam code vouchers when I buying the license. Now my 1-year activation is gonna end in few days. So I wonder does the exam code have the same expiry date as the SolidWorks serial number too? Must I use the vouchers to attend exams before the date of my license expiry? Thank you.

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