Patent ID: 8599407

Claim:
An operation apparatus comprising: an execution request unit that requests a plurality of processing apparatus to execute respective components of a composite processing; a first receiving unit that receives a notification, from one of the plurality processing apparatuses that have been requested to execute the respective components of the composite processing, that execution of one of the respective components of the composite processing cannot be executed by an erroneous one of the plurality of processing apparatuses due to generation of an error; a register unit that registers, in response to the notification being received by the first receiving unit, information indicating whether the error is temporally occurring or continuously occurring, wherein in response to the error being continuously occurring, the register unit registers information indicating that the erroneous one of the plurality of processing apparatuses cannot be used; and an inquiry unit that, in response to use of the erroneous one of the plurality of processing apparatuses, which has been registered in the register unit as an apparatus which cannot be used, being requested, then inquires whether a confirmation is requested to be performed as to whether the erroneous one of the plurality of processing apparatuses cannot currently be used, wherein, in response to the confirmation being requested to be performed, then the inquiry unit further inquires whether the erroneous one of the plurality of processing apparatuses, which is registered in the register unit as an apparatus which cannot be used, cannot currently be used, and wherein, in response to the confirmation not being requested to be performed, then the execution request unit requests that the erroneous one of the plurality of processing apparatuses, which is registered in the register unit as an apparatus which cannot be used, perform the one of the respective components of the composite processing.