Abstract: A method for printing drawing data on the basis of work process steps described in a job ticket, includes: receiving a job ticket and drawing data; judging whether work process steps should be changed on the basis of a process status in the image processing apparatus; a second judgment step of judging whether there is an external device different from the image processing apparatus and capable of executing at least one of the work process steps; and creating a job ticket for causing the external device to execute the work process steps if determined to exist. The method solves the problem that an image processing apparatus cannot change work process steps during the print job process, and a significant delay may occur in a process schedule. Work process steps that should be processed by the image processing apparatus are changed according to a process status in the image processing apparatus.