OAuth Error Codes

When an error occurs during the OAuth flow, the API returns a JSON response with a status of "error" and a descriptive message.

Authorization Errors

Error	Cause	Fix
`invalid_client`	Client ID not found	Verify your `client_id`
`invalid_redirect_uri`	Redirect URI not registered	Add it in Developer Console
`access_denied`	User declined authorization	Handle gracefully in your app

Error	Cause	Fix
`invalid_grant`	Code expired or already used	Request a new authorization code
`invalid_client`	Wrong client_secret	Check your client secret
`missing_parameters`	Required fields missing	Include all required POST params

Error	Cause	Fix
`invalid_token`	Token expired or invalid	Request a fresh access token
`missing_authorization`	No Bearer token sent	Add `Authorization` header

JSON

{
    "status": "error",
    "error": "invalid_client",
    "message": "Client ID not found"
}