A client computer 1 performs a first print setting for each second page range included in a first page range to be subjected to print processing, generates a conflict confirmation job in which an execution result is used for executing conflict processing for detecting the combinations of print settings for which the network printer 3 is incapable of executing print processing, based on the first print setting, and transmits the conflict confirmation job to the network printer 3. The client computer 1 receives an execution result of the conflict confirmation job from the network printer 3, and executes conflict processing based on the execution result of the received conflict confirmation job.