The site checker started checking the state of Site Replication service on server <server name> in organization <name> and site <name>.
Event Information
According to Microsoft: EXPLANATION: A site consistency check is being performed. The configuration connection agreements in Active Directory are being updated to match the inbound and outbound sites on the corresponding remote connectors. The site consistency checker checks for the existence of connected sites and for the existence of new sites within the organization. It also configures configuration connection agreements in Active Directory to replicate any new sites or administrative groups. USER ACTION: No user action is required.