Site '%2' is no longer manually configured in the registry as covered by this Domain Controller for domain '%3'. As a result, ...

Site '%2' is no longer manually configured in the registry as
covered by this Domain Controller for domain '%3'. As a result,
site '%2' does not have any Domain Controllers for domain '%3'.
Domain Controllers in site '%1' have been automatically
selected to cover site '%2' for domain '%3' based on configured
Directory Server replication costs.