A device management system comprising: a management apparatus configured to manage device information, the device information including identification information of a device and operation data of the device; and a transmitting apparatus configured to collect the device information from the device and transmit the device information to the management apparatus, wherein the management apparatus or the transmitting apparatus is configured to monitor an abnormality in the device on the basis of the device information, characterized in that: the management apparatus includes a configuration change processing unit configured to determine, based on the device information, whether a configuration change has been performed on the device, the configuration change being any one of addition, update, and removal of the device, or replacement of a component (11, 12) included in the device, the management apparatus or the transmitting apparatus is configured to change a condition for transmitting the device information from the transmitting apparatus to the management apparatus when it is determined that the configuration change has been executed, the condition being at least one of an information item included in the operation data, a frequency with which the transmitting apparatus is configured to transmit the device information to the management apparatus, and a transmission path through which the transmitting apparatus is configured to transmit the device information to the management apparatus. a management apparatus configured to manage device information, the device information including identification information of a device and operation data of the device; and a transmitting apparatus configured to collect the device information from the device and transmit the device information to the management apparatus, wherein the management apparatus or the transmitting apparatus is configured to monitor an abnormality in the device on the basis of the device information, characterized in that: the management apparatus includes a configuration change processing unit configured to determine, based on the device information, whether a configuration change has been performed on the device, the configuration change being any one of addition, update, and removal of the device, or replacement of a component (11, 12) included in the device, the management apparatus or the transmitting apparatus is configured to change a condition for transmitting the device information from the transmitting apparatus to the management apparatus when it is determined that the configuration change has been executed, the condition being at least one of an information item included in the operation data, a frequency with which the transmitting apparatus is configured to transmit the device information to the management apparatus, and a transmission path through which the transmitting apparatus is configured to transmit the device information to the management apparatus. the management apparatus includes a configuration change processing unit configured to determine, based on the device information, whether a configuration change has been performed on the device, the configuration change being any one of addition, update, and removal of the device, or replacement of a component (11, 12) included in the device, the management apparatus or the transmitting apparatus is configured to change a condition for transmitting the device information from the transmitting apparatus to the management apparatus when it is determined that the configuration change has been executed, the condition being at least one of an information item included in the operation data, a frequency with which the transmitting apparatus is configured to transmit the device information to the management apparatus, and a transmission path through which the transmitting apparatus is configured to transmit the device information to the management apparatus. an information item included in the operation data, a frequency with which the transmitting apparatus is configured to transmit the device information to the management apparatus, and a transmission path through which the transmitting apparatus is configured to transmit the device information to the management apparatus.