When a synchronization is carried out, the synchronization services log the changes made to the involved tables and replicate those changes. To specify which tables are to be replicated in what way, define replication units.
Configuring Database Instances
...
1. Define replication tables (in the master instance)
3. Activate replication units (see Activating and Deactivating Replication Units)
5. Configure synchronization services
You have completed the configuration and can now start the synchronization.