This response can have the following status codes:
200: Authorization completed successfully (native in_place flow). The result contains the authorization code, state, and PKCE artifacts (codeVerifier, nonce, redirectUri).204: No content - user cancelled or flow completed without result data.302: Redirect in progress (web redirect flow). The page will navigate away.400: Bad request - missing required OAuth parameters or invalid configuration.403: Forbidden - client not authorized for the requested scope.500: Internal server error - unexpected error during native authorization.501: Not implemented - this method requires the Grab app environment.
Response when initiating an authorization flow.