A device link profile creation method, comprising: storing a plurality of device link profiles in a storage unit, wherein each one of the plurality of device link profiles includes information about a first device profile which is used to create the one of the plurality of device link profiles; storing the first device profile in the storage unit; and when the first device profile is updated to be a second device profile, detecting, by a control unit, the second device profile; detecting, by the control unit, a first device link profile among the plurality of device link profiles, the first device link profile being created by using the first device profile, as a device link profile to be updated; automatically creating, by the control unit, a second device link profile by using the second device profile; updating, by the control unit, the detected device link profile to be updated by replacing the device link profile to be updated with the created second device link profile, the method further comprising: setting an update detection rule for a device profile by causing the control unit to detect a device profile, creation time information of which is changed, as the second device profile, or to detect a device profile, the creation time information of which is changed, and which includes a change at a binary level after the creation time information is changed, as the second device profile; and detecting, by the control unit, an update of the first device profile into the second device profile by using the set update detection rule for a device profile. storing a plurality of device link profiles in a storage unit, wherein each one of the plurality of device link profiles includes information about a first device profile which is used to create the one of the plurality of device link profiles; storing the first device profile in the storage unit; and when the first device profile is updated to be a second device profile, detecting, by a control unit, the second device profile; detecting, by the control unit, a first device link profile among the plurality of device link profiles, the first device link profile being created by using the first device profile, as a device link profile to be updated; automatically creating, by the control unit, a second device link profile by using the second device profile; updating, by the control unit, the detected device link profile to be updated by replacing the device link profile to be updated with the created second device link profile, the method further comprising: setting an update detection rule for a device profile by causing the control unit to detect a device profile, creation time information of which is changed, as the second device profile, or to detect a device profile, the creation time information of which is changed, and which includes a change at a binary level after the creation time information is changed, as the second device profile; and detecting, by the control unit, an update of the first device profile into the second device profile by using the set update detection rule for a device profile. setting an update detection rule for a device profile by causing the control unit to detect a device profile, creation time information of which is changed, as the second device profile, or to detect a device profile, the creation time information of which is changed, and which includes a change at a binary level after the creation time information is changed, as the second device profile; and detecting, by the control unit, an update of the first device profile into the second device profile by using the set update detection rule for a device profile.