An apparatus allocates a value of page attribute to each page included in a job according to a job attribute set to the job in an intermediate code format that corresponds to data to be printed generated by an application. If a combining instruction is issued to combine a plurality of jobs whose specific job attributes in which only one attribute value can be allocated to one job are allocated different attribute values, the apparatus processes the intermediate code format data so that printing is performed according to the allocated page attribute values. The apparatus then generates a combined job and transmits the generated combined job as print data to the printing apparatus.