PROBLEM TO BE SOLVED: To continuously provide other services of a system even if a service provision function of the system is partially stopped.;SOLUTION: A service request device 11 connected to a service provision device 12 has a failure-state storage part 115 which stores failure states of the service provision device, and a service request determination part 113 which refers to the failure-state storage part 115 so as to determine not to make a service request to the service provision device when the service provision device has a failure.;COPYRIGHT: (C)2008,JPO&INPIT
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