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Author: msjasteppe

articles/healthcare-apis/iot/device-messages-through-iot-hub.md

@@ -210,7 +210,7 @@ You complete the steps by using Visual Studio Code with the Azure IoT Hub extens
    After you select **Send**, it might take up to five minutes for the FHIR resources to be available in the FHIR service.
 
    > [!IMPORTANT]
-   > To avoid device spoofing in device-to-cloud (D2C) messages, Azure IoT Hub enriches all device messages with additional properties before sending it to the MedTech service device event hub with all properties starting with `iothub`. For example: `iothub-creation-time-utc`. For more information, see [Anti-spoofing properties](../../iot-hub/iot-hub-devguide-messages-construct.md#anti-spoofing-properties) and [How to use IotJsonPathContent mappings](how-to-use-iot-jsonpath-content-mappings.md).
+   > To avoid device spoofing in device-to-cloud (D2C) messages, Azure IoT Hub enriches all device messages with additional properties before sending it to the MedTech service device event hub. For example: **Properties**: `iothub-creation-time-utc` and **SystemProperties**: `iothub-connection-device-id`. For more information, see [Anti-spoofing properties](../../iot-hub/iot-hub-devguide-messages-construct.md#anti-spoofing-properties) and [How to use IotJsonPathContent mappings](how-to-use-iot-jsonpath-content-mappings.md).
    >
    > Example:
    >