PURPOSE: A method for intelligently issuing tickets is provided to automatically process errors using preregistered information when the errors occur in an exchange network, so as to reduce an error processing time and easily observe the network. CONSTITUTION: An operator collects and stores information concerning errors. The operator collects and stores ticket information necessary for a ticket issuing. The operator collects and stores data having an index to the error information and the ticket information. If errors occur, the operator automatically generates the ticket information using the index data. The operator issues the generated ticket information.