I figured it out. One of the issues is that the documentation lists x-api-key header key as lower case but it needs to be X-API-Key. Passing this key as lowercase results in a 400 error.I recommend downloading the PostMan libraries and try it there first.

I have an application that uses JWT approach with the .Net SDK to generate a PDF invoice using Json and word. Is in production and works great, but JWT is being deprecated and there is very limited documentation on doing this using OAUTH with the Adobe API.Using the Services api (https://developer.a...