ENTITY_MAP_FOUND_CWOBJ4911=CWOBJ4911E: Domain {0} will not send updates to domain {1} for {2}:{3} because the {4} map is backing an entity in {5}.
Explanation
Map sets containing entities are not supported in a multi-primary environment.
User response
Remove entities from the map set in order to enable primaires in both domains for this map set. No action is required if you do not wish to support a multi-primary topology with this map set.