There are two schedules which are active by default with Service Mapping plugin
- All Applications
- Load Balancer Services
The above two Discovery Schedules need to be run even when you are using Horizontal Discovery on IP's to discover CI's. These two schedules trigger the ServiceDiscoveryProbe, which runs a top down discovery on the endpoints across all the business services.
So it is essential to run these schedules to keep the service maps updated along with running horizontal discovery to discover individual CI's that are part of the service maps.