Short answer
HubSpot's KB: limit associated records or labels. Custom sets a number; defaults are in the catalog.
1. In HubSpot
The relevant screen in my demo portal.

2. Worth knowing
Check existing data before tightening.
Set custom limits per pair.
HubSpot's KB: limit associated records or labels. Custom sets a number; defaults are in the catalog.
The relevant screen in my demo portal.

Check existing data before tightening.
One email when a new article publishes.
If this did not fix it, the problem is probably specific to your setup. Book a call and we will look at it together.
Book a call with Sam