Hello!
Just a follow-up. I was able to complete the API registry. I am now at the step, "Make your first API calls with Postman," and I am stuck there. Per the steps, I am editing the Postman import collection. And in the Authorization tab, I am attempting to "Get New Access Token". But am so far unsuccessful. After I fill in the fields and select "Get New Access Token," two dialogs display. One is a progress screen for "Get New Access Token." The other dialog is a Postman screen entitled, "Postman OAuth 2.0", having the menu tabs "File", "Edit", "View", and "Help", and displaying the text, "{message":""}". The process holds at this point until I "X" out of the "Postman OAuth 2.0" screen. Whereupon the other dialog status changes to "Authentication failed". My guess is that I don't have the fields entered correctly. But have not yet determined resolved this. Any help is appreciated!