USING THE SERVICES OF DIFFERENT DEVICES VIA SERVICE OBJECTS

When a service N provided by a service provider M is accompanied by the use of an accounting service provided by an accounting service provider, a service proxy object n and accounting service proxy object m are acquired. Client information is set in the acquired accounting service proxy object, and the accounting service proxy object holds it. The client information is transferred to the service provider N via the service proxy object n. The service provider N uses the service of the accounting service provider by using the accounting service proxy object which holds the user information.