Patent ID: 8556366

Claim:
An information processing system comprising: a plurality of information processing devices; and an output control apparatus that controls an output mode in an output unit on the basis of a command input from at least one of the information processing devices, wherein each information processing device includes a command generating unit that generates an error command including an error code indicating the content of an error when the information processing device detects the error, wherein the output control apparatus includes an output-mode control unit, wherein when an error command input from a first information processing device among the plurality of information processing devices and an error command input from a second information processing device that is different from the first information processing device are identical to each other, the output-mode control unit causes the output unit to output a single piece of error information including at least one of the error code included in the error command and a message corresponding to the error code, and wherein the single piece of error information does not include duplicate information.