1. A job processing system for causing a job processing unit to execute a job that instructs execution of a plurality of processes using an XML language, the system comprising: a confirmation unit configured to confirm whether or not the plurality of processes instructed by the job can be processed by the job processing unit; and a control unit configured to causes the job processing unit to execute a process that the job processing unit is capable of executing from among the plurality of processes, in the case where said confirmation unit has confirmed that the job includes a process that the job processing unit is not capable of executing.