When you register an app, you're granted a Development Mode Client ID.
While in Development Mode, a Client ID is limited to being used with a maximum of 25 unique Adobe IDs. When an API request is made, the Adobe ID is stored. Once we store 25 unique IDs, any additional Adobe ID requests will be denied. You can reset the stored Adobe IDs at any time from your My Apps page.
Once you've integrated the Creative SDK into your app, you can submit your app for review from the My Apps page. Once your app has been approved by our team, your Client ID will be granted Production status, which removes the Adobe ID restrictions.