If "Allow self-service cancellation or transfer" is enabled on an event, there is a link to the event self-service page contained in the registration confirmation email. When a user clicks on this link, they receive the following message on our site:
"Error You do not have sufficient permission to transfer/cancel this participant."
My questions: Is there a permission which allows anonymous users following the link to self-service the registration? Or is this functionality only available to logged-in users?