1. A system comprising an image processing apparatus and a printing apparatus, the image processing apparatus comprising: an input unit configured to input a print job from a user; a first storage unit configured to store image data of the input print job; and a transmitting unit configured to transmit the image data stored in the first storage unit to the printing apparatus; the printing apparatus comprising: a receiving unit configured to receive the image data; a printing unit configured to print an image based on the received image data; a second storage unit configured to store the image data received by the receiving unit; and a deleting unit configured to delete the image data stored in the second storage unit in a case where the printing unit prints an image based on the received image data, wherein the image processing apparatus comprises a control unit configured to delete the image data in the first storage unit based upon receiving an indication from the printing apparatus that the deleting unit deletes the image data stored in the second storage unit.