I got this for my MS&E Ph.D application (Sorry to hijack this thread, I was searching for this phrase).
This seems to be some sort of paid service by applyweb. The only clue I got is from here: https://gradadmissions.stanford.edu/
For accepted students only: Stanford requires academic credentials directly from the issuing institution. If you attended one of the few institutions that issues only one official document and only to the student, then please submit a HelpSU ticket to request an appointment with Graduate Admissions upon arrival at Stanford for verification of the credential