How do I batch multiple Simple Time Series Data points into a single MQTT message?

Build the JSON payload manually and publish directly. One message can carry multiple data points at a single timestamp.

Payload format (device Temperature Sensor, three data points at one timestamp):

{
  "name": "Temperature Sensor.point",
  "dt": "string",
  "t": 1730171535,
  "d": 30,
  "v": {
    "point1": 25.5,
    "point2": 25.5,
    "point3": 25.5
  }
}

• name: <DeviceName>.<GroupParameterName>
• t: Unix timestamp
• d: TTL in days (0 = never expire)
• v: object containing all data points; keys and structure are user-defined

Publish to cloud:

esp_err_t esp_rainmaker_report_simple_ts_data(char *buf, size_t buf_size)
{
    char publish_topic[150] = {0};
    esp_rmaker_create_mqtt_topic(publish_topic, sizeof(publish_topic),
        "simple_tsdata", "esp_simple_ts_ingest");
    return esp_rmaker_mqtt_publish(publish_topic, buf, buf_size, RMAKER_MQTT_QOS1, NULL);
}

When using this method, the parameter does not need PROP_FLAG_SIMPLE_TIME_SERIES — the application controls all reporting.