we need to change telemetry property key from deviceId to localId to align with telemetry transmission naming conventions.

In telemetry envelopes, the device identifier is transmitted as localId (in envelope.ext.device.localId)
Using localId as the property key creates consistency between storage and transmission naming

Our telemetry was populating device identifier as deviceId
However, telemetry transmission protocol requires ext.device.localId to be populated
Missing localId field prevented Collector from properly inferring device.id
Result: Kusto database receives telemetry events with no device identification