Error examination method and apparatus

PURPOSE: A method and an apparatus for examining errors are provided to track the cause of the errors according to the entities of a source connection map by forming the source connection map based on a source objet and a connection object. CONSTITUTION: A source connection map with respect to sources, which are the managing targets of a network, is generated(S600). If an error is generated in the arbitrary service object of the network, a topology connection map is extracted from the source connection map(S602, S604). The topology connection map sets the service object with the error as a route node. Connection objects starting with the route node are searched from the topology connection map. A source object with errors is inspected(S606).