Found this older post: https://support.box.com/hc/en-us/community/posts/360049182333-enable-app-auth-app-users-without-the-Enterprise-step-?page=1#community_comment_4998971019283
I wonder if this has changed since 2016? The admins at my organization believe it should be possible to access my own Box account via API without the admin/enterprise authorization. I created a JWT app and can upload files to my account via the API and the app's developer token. I just can't seem to generate a regular access token. I only want to be able to upload a file to my own Box account via a Python script (non-interactive/no user interaction). But trying to authenticate and get an access token I can't get past the "unauthorized_client/This app is not authorized by the enterprise admin" error. I did set the box_sub_type/sub parameters to "user" and my user ID, the App Access Level is App Access Only and the only Application Scope or Advanced Feature I have checked is Write files and folders.