A cooperative processing apparatus for executing a cooperative process of respective services based on cooperative instruction information representing an instruction for cooperating a plurality of services for respectively executing predetermined processes on document data, on a network, the cooperative processing apparatus includes: an error determining section that determines an error which occurs in a service in the cooperative process; a document detecting section that detects the presence or absence of document data processed by the cooperative process; and a cooperative control section that reexecutes the cooperative process based on the error determined by the error determining section and the presence or absence of document data detected by the document detecting section.