I managed to make a successful request now. I had to use dropbox for inputs and outputs hrefs. Seems like there is an issue with the Creative Cloud Files authorization.

Okay so the OAuth is now configured and with the token I get from OAuth (scope is "AdobeID,openid") I receive:{"error_code":"403016","message":"Oauth token type not valid"} According to the Developer Console the service I need to use "Lightroom - Creative Cloud Automation Services" requires a JWT access token, not an OAuth. But as I said, using the generated token from the console results in:{"title":"Unauthorized","code":401,"type":"InvalidAuthTokenError","details":{"reason":"Unable to access t...

Thanks, now I receive a result body: {"title":"Unauthorized","code":401,"type":"InvalidAuthTokenError","details":{"reason":"Unable to access the input href","name":"/files/input.jpg"}}