A method for processing a print job on a document processing system including a plurality of devices which includes at least one printer and at least one finisher in order to deliver an end print product according to print specifications of the print job. Each device is described in a dedicated device model including constraints and capabilities of the device. The method includes receiving a print job with print specifications, generating a production route for the end product by selecting at least one printer and at least one finisher to deliver the end product, simulating the production route for the end product by executing the device models for the selected devices, generating finishing instructions for the at least one finisher, and processing the print job by printing the end product by the at least one printer and by finishing the end product by the at least one finisher according to the generated finishing instructions.