IoT Core Service, gRPC: DeviceDataService.Publish

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Updated at July 1, 2026

Publishes message on behalf of specified device

gRPC request

{
  "device_id": "string",
  "topic": "string",
  "data": "bytes"
}

Field	Description
device_id	string Required field. ID of device publishing message The maximum string length in characters is 50.
topic	string Required field. Topic where message should be published The maximum string length in characters is 1024.
data	bytes Content of the message The maximum string length in characters is 262144.

{}

Field	Description
Empty