调用ascm DeleteUserAccessKey，出错AccessKey不合法

我在阿里云的官网上运行它的代码，DeleteUserAccessKey，如下

{
  "AccessKeyId": "abcdabcdN52Iabcd",
  "AccessKeySecret": "abcd273oReabcdabcd2abcd",
  "Action": "DeleteUserAccessKey",
  "Product": "ascm",
  "RegionId": "cn-hk-xxxx-d01",
  "Version": "2019-05-10",
  "isFormat": false
}

出了下面的错，说Accesskey不合法，但是我提供的accesskey都是正确的呀。

{
    "code": "200",
    "data": {
      "errorKey": "ascm.manage.InvalidParameter.AccessKey",
      "eagleEyeTraceId": "asdsfdgsdfgdhdfghdfghdgfh",
      "asapiSuccess": false,
      "product": "ascm",
      "code": "427",
      "cost": 58,
      "errorType": "System",
      "dynamicMessages": [
        "Operate UserAccessKey error"
      ],
      "errorMessage": "AccessKey不合法",
      "errorCode": "ascm.manage.InvalidParameter.AccessKey",
      "asapiVersion": "v4",
      "message": "AccessKey不合法",
      "successResponse": false,
      "serverRole": "unimanager-base.IdentityService#",
      "responseVersion": "v1",
      "success": false,
      "errorTitle": "AccessKey不合法",
      "extraMessage": "Operate UserAccessKey error",
      "domain": "ascm-auth.ali.cloud.cn.xxxx",
      "diagnose": "",
      "api": "ascm:DeleteUserAccessKey:2019-05-10",
      "key": "ascm.manage.InvalidParameter.AccessKey",
      "asapiErrorCode": "ascm.manage.InvalidParameter.AccessKey",
      "asapiErrorMessage": "AccessKey不合法"
    },
    "cost": 247,
    "apiCost": 242,
    "eagleEyeTraceId": "asdsfdgsdfgdhdfghdfghdgfh",
    "ascmCode": false,
    "successResponse": true
  }