PURPOSE: To input an answer from a supervisory computer for an answer request message in a console message transferred from each departmental computer in a distributed system in which the plural departmental computers located at distance places are supervised concentrically from one supervisory computer.

CONSTITUTION: When an application program 11 outputs the answer request message, a console message transfer judging means 12 transfers it to the supervisory computer 10, and a dapartmental computer name adding means 103 displays the answer request message on terminal equipment 106. When an operator inputs an answer input message to the terminal equipment 106, an answer input message receiving means 105 transfers it to the departmental computer 1, and an answer input message informing means 15 delivers the answer input message to the application program 11.