Common request parameters

Parameter Type Required Description
Format String No The format in which the response is returned. Valid values:

JSON and XML. Default value: JSON.

Version String Yes The version number of the API. Format: YYYY-MM-DD. Valid values:


AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud.
Signature String Yes The signature string of the current request.
SignatureMethod String Yes The encryption method of the signature string. Valid values:


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.

Example: 2013-01-10T12:00:00Z, which indicates 20:00:00 on January 10, 2013 (UTC+8).

SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to:


SignatureNonce String Yes A unique, random number used to prevent replay attacks.

You must use different numbers for multiple requests.

ResourceOwnerAccount String No The username of the account that owns the resource that you want to access through this API request.

Sample requests

Common response parameters

Every response returns a unique RequestID (RequestId) regardless of whether the call is successful.

  • XML format
    <? xml version="1.0" encoding="utf-8"? > 
        <!--Result root node-->
        <Operation name+Response>
            <!--Returned request tag-->
            <!--Response parameters-->
        </Operation name+Response>
  • JSON format
        /*Response parameters*/