A processing system including an inkjet printer that performs printing on a workpiece according to print data associated with a jig ID that indicates the type of jig, and a jig having a jig ID indicating its type that supports the workpiece and is set in the inkjet printer acquires the jig ID from the jig (S61), and notifies incompatibility between the print data and the jig when the jig ID associated with the print data, and the jig ID acquired from the jig in S61 do not match (NO in S63) (S64).