If you are receiving the following 403 errors: "message": "The used authentication method is not allowed on this route." "message": "This route can only be accessed by anonymous users." Then keep reading for how to resolve them.   Attempting to log in to a Drupal site using REST API and I had to battle a few head winds along the way.  What is worse, they were self imposed!   Attempting to authenticate I was initially using the following to login in a user method: post url:...

Registering a user via REST is an important process particularly when the requests come from a mobile device. In working through the process you might have come across error message like: 403 Forbidden : "Only anonymous users can register a user." 422 Unprocessable Entity : "A Password cannot be specified. It will be generated on login."So how did I get these and what to do? First off, check the REST set up in the administration area of Drupal.  Configure User and User registration...