A non-transitory computer-readable storage medium storing a printer driver, when being executed by a processor of the computing device, causes a computing device to perform prohibition processing including: obtaining setup items associated with print features of the printer device and corresponding option values from PrintTicket, to create check data; checking the check data for a setup item causing a conflict between option values; and in response to finding a setup item causing a conflict between option values, replacing an option value in the PrintTicket, which is set for the setup item causing the conflict, with another option value.