Hi,The parameter in your request ("X-GW-IMS-User-Email") isn't part of
the documentation or the sample code provided in the article : Digital
Publishing Solution Help | Integrating with Adobe Digital Publishing
SolutionPlease make sure that you have all the elements as follows
:https://ims-na1.adobelogin.com/ims/token/v1?grant_type=device&client_id=your_client_ID&client_secret=your_client_secret&scope=AdobeID%2Copenid&device_token=your_device_token&device_id=your_device_id
You can run the sample...