External rest data source authentication issue

Thank you for the response. Your explanation helped me understand what is happening ( I think). Authentication seems to be working with “Shared User Name: Separate Authentication URL”, but then I need to retrieve the token and pass it in the header of each call. I see the Headers to send with every request section, but I can’t do anything with it. Under “Object” the only thing listed is “Blank Object”. Any guidance on how I can accomplish the connection would be greatly appreciated. Thanks