Only ever made self contained mods, a long time ago. :) Good to know. Subscribed to a bunch of your park assets now. Much appreciated.

@FalconerHG yes that's right. I always subscribe to buildings or parks from the asset's page for a few reasons, "required items" is one of them.
If its a vehicle or a tree it doesn't matter.

Thanks.
What you describe apparently only works if you subscribe from the mod's page. It does not work if you subscribe from the overview page that lists mods. Steam should fix this.

@FalconerHG it is the same as any other asset on the Workshop:
The required items are listed on the right, and when you subscribe the system asks you if you want to "Subscribe to all required items"

When I subscribed, it did not tell me anything else was needed. I subscribed to 4 or 5 of these.

@FalconerHG you need to subscribe to all the required items.

Doesn't work on vanilla. Just creates an empty plot of land.