When ISO publishes a new edition, the accreditation bodies set a transition
period — normally three years from publication. During it, both editions are valid.
After it, certificates against the old edition cease to be valid even if their
printed expiry date has not arrived. This surprises people every cycle.
Moving is usually done at a surveillance or recertification audit already scheduled, with
additional audit time for the new requirements, rather than as a separate exercise. Leaving
it until the final months is the common and avoidable mistake: capacity across every
certification body tightens at exactly the moment everyone needs it.
Because the edition matters this much, every UMA certificate names the edition
audited against, and so does the public register. A certificate that does not name
an edition is not telling you what was actually assessed.
This page is a summary maintained in good faith and is not authoritative. Dates change, and
an accreditation body or regulator can amend a transition period. The linked source governs.