问移动端加固接口调用错误？

接口名字:CreateShieldInstance

入参没有提到要添加Timestamp 参数

"Response":{

"Error":{

"Code":"MissingParameter",

"Message":"The request is missing a required parameter `Timestamp`."

},

"RequestId":"04127169-11f9-43a1-a708-83c9d1b343ac"

}