Public parameters refers to the parameters that every interface call uses, including public request parameters and public response parameters.

Public request parameters

Public request parameters refer to the request parameters that every interface uses.
Parameters Type Required Description
Version String Yes API version.
  • The format is YYYY-MM-DD.
  • The current version is 2016-11-01.
AccessKeyId String Yes The Key ID provided by Alibaba Cloud for you to access services.
Signature String Yes The request signature. See Signature for the signature calculation method.
SignatureMethod String Yes The mode of the signature. HMAC-SHA1 is supported currently.
Timestamp String Yes The timestamp to request.
  • The date format follows the ISO8601 standard and uses UTC time.
  • Format: YYYY-MM-DDThh:mm:ssZ.
  • Example: 2014-11-11T12:00:00Z (equivalent to 20:00:00 on November 11, 2014, Beijing time).
SignatureVersion String Yes Signature algorithm version. The current version is 1.0.
SignatureNonce String Yes The unique random number that is used to prevent network replay attacks. You must use different random numbers for different requests.
ResourceOwnerAccount String No The resource owner account for this API request, that is the login user name. For more information about using this parameter, see RAM resource authorization.( You can only use this parameter in the Action of the RAM in which the live resources can be authorized, or the request is rejected.)
Format String No Type of value returned, JSON and XML supported. Default value: XML.

? Format=xml

Public response parameters

Each time you make a call to an API, the system returns a unique identification code (RequestId), regardless whether the request is successful.


  • XMLexample
    <? xml version="1.0" encoding="UTF-8"? >
    <! --Result Root Node-->
    <Interface Name+Response>
    <! --Return Request Tag-->
    <! --Response Result Data-->
    </Interface Name+Response>
  • JSON example
    "RequestId": "4C467B38-3910-447D-87BC-AC049166F216",
    /* Returned data*/