Hi, Noel.
Thank you for contacting the Microsoft community.
As we understand from your post, you would like to know if Exam MS-102 is still valid twelve months after its achievement date. We are happy to help!
Exams do not expire. They are valid while they are part of the requirements to achieve a Certification. Even if their corresponding Certification is retired, your passed Exams will always be listed on your Transcript.
By our expiration policy, passing an Exam is only required to earn a Certification for the first time, or to re-earn it after it has expired.
However, if an Exam is retired or replaced, it may no longer count towards the requirements to achieve its corresponding Certification. Due to this, we advise fulfilling the requirements to earn this Certificate at your earliest convenience.
For more information on Certification renewals, please visit the article: Microsoft Certification Renewal | Microsoft Learn.
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Kind regards,