Note: You are currently viewing documentation for Moodle 3.1. Up-to-date documentation for the latest stable version of Moodle is probably available here: error/mnet/notpermittedtojump.
You are not allowed to roam to a remote Moodle or Mahara site. The most likely reasons are...
* The user doesn't have permission to roam (moodle/site:mnetlogintoremote capability) * The user is a remote user who has already roamed to your Moodle * The user's username is the literal string 'guest' * The user's ID is not set (which can't be the case here)
The moodle/site:mnetlogintoremote is not enabled for the Authenticated Users role by default and this, therefore, is the most likely reason.