Associated actions - in the sentence "You don't have permission to X", where the first part of the sentence comes from("You do not have permission to $2, for the following reasons:").
This is an action that corresponds to a user right. See Special:ListGroupRights for an overview of the rights used on translatewiki.net. See Manual:User rights at MediaWiki.org for general information.
For the corresponding user right to this action, MediaWiki:Action-confirmaccount-notify/en"), see:("
- ("Be notified via email about newly approved account requests")
This empty message exists only to keep CI happy. It is never used anywhere in reality.