Hi, everyone, here’s the feedback about this discussion:
The current limit of devices installed is 200 per Location, for users to continue expanding their Smart Home, they need to create a new Location and install the new devices there.
If your Location is already reaching the limit or above it, and, you cannot add more devices. You can migrate the Cloud Connected integrations (those that require a login into the Third-Party Cloud), first to the new one because they don’t require a SmartThings Hub.
Note: Remember a SmartThings Hub can belong to a single Location.