This is the result that will appear if the link is valid, but the consumer key or secret are incorrect.
This is what will appear if the link is a valid link and the consumer key and secret are in the database, but don't match the site.
This is what shows up if the link has a valid subdomain but an invalid course slug.
Note: If the consumer key and secret were correct, a user will still be created.
This is what will appear if you entered a link with a non-existing subdomain.
This is what will appear if you did not send a first name, last name, or email address.
This is what will appear if someone clicks the link and had an email address that was already used. This is a common problem for people using a test and production server, you are not allowed to use the same email for both.