Printing apparatus and method of controlling printing apparatus

A printing apparatus includes one or more print execution units each including a plurality of storage units configured to receive and storage pieces of image data transferred from a higher level apparatus via a first transfer path, respectively, a plurality of image forming units configured to form an image on a print medium in accordance with the pieces of image data stored in the storage units, and a selection unit configured to select a path for transferring a piece of image data stored in the storage units for each of the image forming units; and a print control unit configured to control the print execution units to print the image data in accordance with control information transferred from the higher level apparatus via a second transfer path. The selection unit selects the path in accordance with configuration information indicating configuration of all of the one or more print execution units.