This OAuth2 client app first obtains an Access Token from the Authorization Server with which the VOOT Resource Server can be accessed to query protected resources.

The client must have obtained the key out-of-band during the registration process

The secret (normally a UUID) is also obtained out-of-band by the client during the registration process

The scope for which to grant access

A credential representing the resource owner's authorization (to access its protected resources) used by the client to obtain an access token

Check the above to ensure we don't use the playground redirect-uri. Then after the authorization code is granted you will be redirected to the pre-configured redirect for this client. This of course depends on which authorization server you are using.

The access token endpoint of the Authorization server

The authorization endpoint of the Authorization server