An image processing apparatus which is connected to a plurality of information processing apparatuses receives notification information, which includes information about each information processing apparatus and is transmitted from the plurality of information processing apparatuses, and displays an information processing apparatus corresponding to the notification information as a list. When a deletion instruction to delete a specific information processing apparatus from among the information processing apparatuses that are objects to be displayed is accepted, the image processing apparatus deletes the specific information processing apparatus from the list. After the specific information processing apparatus is deleted from the list, the image processing apparatus displays other information processing apparatus corresponding to the received notification information instead of the information processing apparatus that has been deleted, so that the other information processing apparatus can be selected as a transmission destination of image data.