<p>Used by activity workers and task states using the <a href="https://docs.aws.amazon.com/step-functions/latest/dg/connect-to-resource.html#connect-wait-token">callback</a> pattern to report to Step Functions that the task represented by the specified <code>taskToken</code> is still making progress. This action resets the <code>Heartbeat</code> clock. The <code>Heartbeat</code> threshold is specified in the state machine's Amazon States Language definition (<code>HeartbeatSeconds</code>). This action does not in itself create an event in the execution history. However, if the task times out, the execution history contains an <code>ActivityTimedOut</code> entry for activities, or a <code>TaskTimedOut</code> entry for for tasks using the <a href="https://docs.aws.amazon.com/step-functions/latest/dg/connect-to-resource.html#connect-sync">job run</a> or <a href="https://docs.aws.amazon.com/step-functions/latest/dg/connect-to-resource.html#connect-wait-token">callback</a> pattern.</p> <note> <p>The <code>Timeout</code> of a task, defined in the state machine's Amazon States Language definition, is its maximum allowed duration, regardless of the number of <a>SendTaskHeartbeat</a> requests received. Use <code>HeartbeatSeconds</code> to configure the timeout interval for heartbeats.</p> </note>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}