access_token

Query the authorization server for an access token used to access property resources.
If the automatic delivery method for API keys is used, the grant type urn:ietf:params:oauth:grant-type:api-key needs to be used to request an API key. This grant type requires grant_type=urn:ietf:params:oauth:grant-type:api-key, client_id, client_secret, redirect_uri and code.
For OAuth 2.0., two different grant types (authorization_code, refresh_token) are supported. Authorization code grant type requires grant_type=authorization_code, client_id, client_secret, redirect_uri, code. Refresh token grant type requires grant_type=refresh_token, client_id, client_secret, refresh_token.
Read the Authentication guide for implementation tips, user flows and testing advice.