A method in a data processing device for processing a print request from
an application using a print driver or a plug-in module for extending the
printer driver is disclosed. The method includes a discrimination step of
discriminating a conflict between a setting inputted to the plug-in
module and a setting inputted to at least one of the plug-in module or
the printer driver and a notification step of notifying the application
of response information relating to the reason for the conflict.