A remote management agent apparatus for a remote management system, the remote management system including a remote device management apparatus and a management target device managed by the remote device management apparatus remotely, the remote management agent apparatus comprising: a request data receiver configured to receive request data issued from the remote device management apparatus to the management target device; a device agent apparatus identifying unit configured to identify a device agent apparatus capable of communicating in compliance with a communication mode supported by the management target device; and a request data forwarder configured to forward the request data, received by the request data receiver, to the device agent apparatus identified by the device agent apparatus identifying unit, characterized in that the device agent apparatus identifying unit is further configured to refer to first mapping information representing a mapping between the management target device and the device agent apparatus, in order to identify the device agent apparatus capable of communicating in compliance with the communication mode supported by the management target device, and the mapping between the management target device and the device agent apparatus is generated by performing the following steps of: sending, from the remote device management apparatus to the remote management agent apparatus, a request for adding information about the management target device, forwarding, by the remote management agent apparatus, the request to the device agent apparatus, registering, by the device agent apparatus, information about the management target device, sending, from the device agent apparatus to the remote management agent apparatus, a notification indicating completion of the registering, and adding, by the remote management agent apparatus, the mapping between the management target device and the device agent apparatus to the first mapping information, in response to receiving the notification from the device agent apparatus. a request data receiver configured to receive request data issued from the remote device management apparatus to the management target device; a device agent apparatus identifying unit configured to identify a device agent apparatus capable of communicating in compliance with a communication mode supported by the management target device; and a request data forwarder configured to forward the request data, received by the request data receiver, to the device agent apparatus identified by the device agent apparatus identifying unit, characterized in that the device agent apparatus identifying unit is further configured to refer to first mapping information representing a mapping between the management target device and the device agent apparatus, in order to identify the device agent apparatus capable of communicating in compliance with the communication mode supported by the management target device, and the mapping between the management target device and the device agent apparatus is generated by performing the following steps of: sending, from the remote device management apparatus to the remote management agent apparatus, a request for adding information about the management target device, forwarding, by the remote management agent apparatus, the request to the device agent apparatus, registering, by the device agent apparatus, information about the management target device, sending, from the device agent apparatus to the remote management agent apparatus, a notification indicating completion of the registering, and adding, by the remote management agent apparatus, the mapping between the management target device and the device agent apparatus to the first mapping information, in response to receiving the notification from the device agent apparatus. sending, from the remote device management apparatus to the remote management agent apparatus, a request for adding information about the management target device, forwarding, by the remote management agent apparatus, the request to the device agent apparatus, registering, by the device agent apparatus, information about the management target device, sending, from the device agent apparatus to the remote management agent apparatus, a notification indicating completion of the registering, and adding, by the remote management agent apparatus, the mapping between the management target device and the device agent apparatus to the first mapping information, in response to receiving the notification from the device agent apparatus.