To efficiently and surely perform the operation of confirming an operating environment for each terminal device when introducing a consolidated accounting system.

The consolidated accounting system 100 comprises an operating environment confirmation processing device 110 provided in a system management company, a plurality of terminal devices 120 provided in each affiliate company, and a consolidated accounting process device 130 provided in a data center. In the consolidated accounting system 100, the operating environment confirmation processing device 110 is an information processor such as a personal computer that performs the processing of confirming an operating environment for each terminal device 120. During the processing of confirmation of the operating environment, the operating environment confirmation processing device 110 can display a list of processing results on a screen. The operating environment confirmation processing 110 can send the results of the operating environment confirmation process to the terminal devices 120.