When viewing Tags and Recommendations in NXT web view, user note that some constituents have the Tag 'Attended event' listed, but are marked as Do Not Register or Not Registered in the Participant field of the participant record in database view.
The Registered for event tag does not represent the Registration field of the Constituent's Participant record; it is intended to represent any constituent who is a participant for an upcoming event. In order for a Constituent record to generate the Registered for event tag, the following criteria must be met:
The Constituent must have a Participant record populated on an Event record
The Event record must have a future date populated in the Start date field