Abstract: A plurality of branches having a plurality of terminal units and a plurality of financing devices, and a computation center are provided. An AP server in the computation center includes a plurality of device-related components that give control instructions of financing devices, a plurality of upper access components for enabling the use of plural types of work systems, a plurality of work-related component described as work logics and a component flow management unit to call such components in sequence. By enabling the component flow control unit to call the components in sequence according to the call sequence of component flow definition information that is defined in advance, an application for branch work is realized on the side of the AP server.