A first inspection apparatus registers an image scanned from a print product printed by a first printing apparatus as a first reference image, and registers information of a print job related to printing of the image with the image and first configuration information indicating configuration of the first printing apparatus. A second inspection apparatus imports the first reference image registered in the first inspection apparatus and registers the imported first reference image as the second reference image. Based on information of the print job registered with the first reference image, the first configuration information, and the second configuration information indicating the configuration of the second printing apparatus, it is controlled whether the first reference image is registered as the second reference image by reversing a front and back of the first reference image or as the second reference image without reversing the front and back of the first reference image.