How to get api_access_point when using oauth/v2 API?

[Wolfgang23689870rjms]

I created a new API Application (the other one I had was more than a year old).
When using the new application, I need to use the oauth/v2 endpoint. (For the old application, the old endpoint still works).
When redirecting to return the authorization code, the api_access_point parameter is not returned (the old API returns it).

Actual behavior: like https://opensource.adobe.com/acrobat-sign/developer_guide/helloworld.html#success-vs-failure

Expected behavior: like https://opensource.adobe.com/acrobat-sign/developer_guide/helloworld.html#the-customer-experience

How am I supposed to retrieve the api_access_point parameter?
- The basicUris endpoint requires authentication, so this is a chicken and egg problem.
- Also the design of https://opensource.adobe.com/acrobat-sign/developer_guide/helloworld.html#getting-the-access-token is weird. I need to know the api_access_point to call it. How does it help that it is returned by the function?

Thank you

[Wolfgang23689870rjms · Accepted solution]

Response from Adobe Support:

Please be informed that there was a some change in Oauth version. Changes were made last year during June 2021 Release. You can refer to the link below and go to the section (OAUTH 2.0 IS THE NEW DEFAULT). https://helpx.adobe.com/sign/internal/archive/adobesign_release_notes_archive/2021.html#OAuth2

The old endpoint will continue to work for existing connections over the next several months to ensure continued access but it will deprecate very soon (No timeline for this yet).

New specs are available here: https://secure.echosign.com/public/static/oauthDoc.jsp