An information processing apparatus generates a code for identifying images in imposition image data representing an image print region, determines candidate regions so that codes in print regions in pages represented by the imposition image data will not be printed at a same position, generates print data based on the imposition image data so that the code will be placed in at least one of the determined candidate regions. For the print data, up to a predetermined number of pages represented by pieces of the imposition image data, a print position of the code is same in a first page and a following second page. When a predetermined number of pages represented by the pieces of the imposition image data is reached, the print position of the code is different in the first page and the second page. The generated print data is output to a printing apparatus.