1. A method of controlling an image processing apparatus that sets a number of prints for each image, comprising: specifying an image of interest for which image processing conditions other than a number of prints are to be set; determining whether a number of prints has been set for the specified image of interest; accepting setting of image processing conditions other than a number of prints after displaying a warning message if the number of prints has been set for the specified image of interest; accepting setting of image processing conditions without displaying the warning message if the number of prints has not been set for the specified image of interest; and storing in a memory the accepted image processing conditions in correlation with the image of interest.