An image processing apparatus includes a receiving unit configured to receive a job ticket from an information processing apparatus, a determination unit configured to determine whether it is permitted for a user to use an extended function not included in functions described in function information defined in the job ticket received by the receiving unit, and a control unit configured, if it is determined by the determination unit that it is permitted for the user to use the extended function, to permit execution of processing on image data that uses a function described in the function information defined in the job ticket received by the receiving unit and execution of processing that uses the extended function.