I am auditing GA implementation for a startup and found they have a separate property for each of its subdomains. And yes it is possible to navigate from subdomain to root domain and vice versa.
Each subdomain has a specific function blog/guide(blog.example.com) and tools(tools.example.com) various tools user can use.
This is also true for google search console as well.
Now the question is: is above setup correct? Since each property will have its own
TrackingId how will this affect reporting?
Or should I just remove all subdomain property?
PS: I am using Google Universal Analytics and managing all of that with GTM