A cooperation server executes printing processing of a document from an MFP through a printing server based on matter information including a printing instruction for the document received from a matter management server. The cooperation server notifies the client PC of the printing order that includes the printing ID and access information used for registering the costs related to the printing after completion of printing, provides a registering screen for costs related to printing by reason of the access from the client PC, and registers the costs registering information received from the client PC on the matter management server.