An image processing apparatus for reading a document to generate image data using a reading unit performs, receiving a job including a document reading-and-transmission job for causing the reading unit to read a document to generate image data and then transmitting the image data to a specified destination, from an information processing apparatus communicable via a network, storing the received job, displaying a list of the stored jobs in response to a user instruction, displaying a confirmation screen related to transmission setting contents of a document reading-and-transmission job selected from the list of jobs, and executing, in a case where execution of the selected document reading-and-transmission job is instructed via the confirmation screen, the document reading-and-transmission job.