Update the "PI System Infrastructure Specialist: Readiness Exam" links
The "PI System Infrastructure Specialist: Readiness Exam" link is broken wherever it appears, such as on certificate pages or in the error message when you try to register for PI System Installation Accreditation without completing the prerequisites. The latter case and an example of the former case are linked below.
Ideally, please fix the broken link wherever it is used, but if that is not feasible, a redirect to the correct page would be the next best option. I'm guessing that the correct page is the one linked below: