Common request parameters must be included in all API requests.

Common request parameters

Parameter Type Required Description
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. The value is in the format of YYYY-MM-DD. The current version is 2016-01-20.
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud.
Signature String Yes The signature string of the current request. For more information about how signatures are calculated, see Request signatures.
SignatureMethod String Yes The encryption method of the signature string. Set the value to HMAC-SHA1.
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: 2015-12-01T12:00:00Z.
SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to 1.0.


Common response parameters

Every response returns a unique request ID regardless of whether the call is successful.


XML format

  <!-Return Result Data-->

JSON format

  "RequestId": "284b2b80-9b17-4546-a093-adfbae512a54"