在使用stepfunction从AWS dynamoDB获取数据时，我得到错误“提供的键元素与模式不匹配”。

阶跃函数定义

{
  "Comment": "This is your state machine",
  "StartAt": "Choice",
  "States": {
    "Choice": {
      "Type": "Choice",
      "Choices": [
        {
          "Variable": "$.data.Type",
          "StringEquals": "GET",
          "Next": "DynamoDB GetItem"
        },
        {
          "Variable": "$.data.Type",
          "StringEquals": "PUT",
          "Next": "DynamoDB PutItem"
        }
      ]
    },
    "DynamoDB GetItem": {
      "Type": "Task",
      "Resource": "arn:aws:states:::dynamodb:getItem",
      "Parameters": {
        "TableName": "KeshavDev",
        "Key": {
          "Email": {
            "S": "$.Email"
          }
        }
      },
      "End": true
    },
    "DynamoDB PutItem": {
      "Type": "Task",
      "Resource": "arn:aws:states:::dynamodb:putItem",
      "Parameters": {
        "TableName": "KeshavDev",
        "Item": {
          "City": {
            "S.$": "$.City"
          },
          "Email": {
            "S.$": "$.Email"
          },
          "Address": {
            "S.$": "$.Address"
          }
        }
      },
      "InputPath": "$.data",
      "End": true
    }
  }
}

输入

{
  "data": {
    "Type": "GET",
     "Email": "demo@gmail.com"
  }
}

错误

{ "resourceType": "dynamodb "，" resource": "getItem "，" error": "DynamoDB。AmazonDynamoDBException "，"原因":"提供的键元素与架构不匹配(服务:AmazonDynamoDBv2状态码:400；错误代码:ValidationException请求ID:a 78 C3 D7 a-ca3f-4483-b986-1735201 D4 ef 2；代理:空)" }