Mismatching redirect URI message when trying to get access token with postman

[Cody Metz]

Hi, I've been having trouble trying to get an access token through postman. I've been following this article to a tee: https://drchronoapi.wpengine.com/connecting-to-onpatient-api-via-postman/. However, after I login to DrChrono through the pop up window that postman brings up, it sends me to a page that says: 

"Authorization Requested. invalid_request. Mismatching redirect URI."

Do you know of any reason why I might be seeing this message? My oauth configuration in postman is exactly like the article above. I'm feeling pretty stuck at this point. Any help is appreciated. Thanks!

[bri...@drchrono.com]

You'll get this message specifically if the redirect url (Callback url) in Postman does not match one of the redirect urls in the OnPatient API settings. Make sure there aren't any spaces after the url in either. If still facing trouble reach out to a...@drchrono.com.