为什么没有@timestamp

Question

您知道为什么我的索引中没有看到@timestamp

{
  "_index": "cwl-test-20190926",
  "_type": "cwl",
  "_id": "35001503664322802044038601565960510753955487933136961536",
  "_version": 1,
  "_score": 0,
  "_source": {
    "id": "35001503664322802044038601565960510753955487933136961536",
    "timestamp": 1569521706684,
    "message": "Start my lambda",
    "level": "info",
    "lambda": "api-my-lmbda",
    "date": "2019-09-26 18:15:06"
  }
}

当我尝试创建索引模式时，出现此错误：

  

与此索引模式匹配的索引不包含任何时间   字段。

我使用Amazon Elasticsearch Service 7.1

预先感谢