There’s a limit of 80 global dashboards per instance, global dashboards are those with access permission set to “My Organization” (check Learn about Access Restrictions . The reason behind is purely technical. To avoid space problems storing the dashboards configuration, we have to limit the global dashboards creation to 80 dashboards. We will improve this in the future, changing the way we store information.

There is NO limit for private dashboards, so feel free to create as many as you need to.

See also