Hi everyone, I want to enforce a rule in my Discourse forum where, for a specific category only, users must attach a particular tag when creating a topic. Users can attach any number of tags, but one specific tag must be present; otherwise, the topic creation should be blocked with an error message…

How to enforce a required tag for topic creation in a specific category via theme JS (Blackout theme)?

chapoi (Charlie) August 26, 2025, 8:53am 4

I think you’re right and you have uncovered a bug. I’m pinging the relevant team!

Topic		Replies	Views
Remove optional tag UX	9	1199	October 11, 2020
Attempting to enforce 1 tag per topic in a category Support	4	926	December 12, 2021
Category with restricted tags now required for admins? Support	9	753	June 3, 2020
Require Tag to Post New Topic Support	3	2111	September 7, 2017
The option to enforce tagging Feature	18	5897	May 21, 2018