Common parameters include common request parameters and common response parameters.

Common request parameters

Parameter Type Required Description
Action String Yes The operation that you want to perform.
Format String No The format in which to return the response. Valid values: JSON and XML. Default value: XML.
Version String Yes The version number of the API. Specify the version number in the YYYY-MM-DD format. Set the value to 2020-03-31 in this version.
Signature String Yes The signature string of the current request.
SignatureMethod String Yes The encryption method of the signature string. Set the value to HMAC-SHA1.
SignatureNonce String Yes A unique, random number used to prevent replay attacks. You must use different numbers for different requests.
SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to 1.0.
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud.
Timestamp String Yes The timestamp of the request. Specify the time in the ISO 8601 standard in the YYYY-MM-DDThh:mm:ssZ format. The time must be in UTC.

Sample requests

Common response parameters

Parameter Type Description
RequestId String The ID of the request. Every response returns a unique RequestId regardless of whether the call is successful. The RequestId is used to identify a request.

Sample responses

  • XML format
    <?xml version="1.0" encoding="utf-8"?> 
        <!—Result Root Node-->
        <Interface Name+Response>
            <!—Return Request Tag-->
            <!—Return Result Data-->
        </Interface Name+Response>                      
  • JSON format
        /*Return Result Data*/