You have an Azure loT solution that contains an Azure IoT hub and the Azure IoT Edge gateways shown in the following table.

You have the leaf devices shown in the following table.

The IoT hub receives the messages shown in the following table.

You plan to a deploy a new Azure Time Series Insight environment.

You need to recommend a Time Series ID property name to ensure that the telemetry of each device will be stored in a separate time series instance.

What should you recommend?