Hello @Emily Harper
Thanks for using Microsoft Q&A platform. I think the URL you shared is for a specific version only, which may be expired. Please check below API document page-
https://westus.dev.cognitive.microsoft.com/docs/services/form-recognizer-api-2022-08-31/operations/AnalyzeDocument
If you can share where you saw those links to me so that I can fix it, it will be helpful..
I hope this helps!
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.