Common parameters include common request parameters and common response parameters.

Common request parameters

Parameter Type Required Description
Format String No The format in which to return the response. Set the value to JSON.
Version String Yes The version of the API in the YYYY-MM-DD format. Set the value to 2020-07-06.
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud for authentication.
Signature String Yes The signature string of the current request. For more information about how signatures are calculated, see Signature method.
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.

For example, 2020-01-10T12:00:00Z specifies 20:00:00 on January 10, 2020 (UTC+8).
SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to 1.0.
SignatureNonce String Yes A unique, random number used to prevent replay attacks. You must use different random numbers for different requests.

Sample requests

http://actiontrail.cn-hangzhou.aliyuncs.com/actiontrail
? SignatureVersion=1.0
&OssBucketName=yuanch****
&Name=CreateTest
&Format=JSON
&Timestamp=2020-01-10T12:00:00Z
&Signature=iyEsE7vgGUWop7Term5HM48wzJ****
&AccessKeyId=LTAI4GK3D6YtNkNZfjDV****
&SignatureMethod=HMAC-SHA1
&Version=2020-07-06
&RoleName=aliyunactiontraildefaultrole
&Action=CreateTrail
&SignatureNonce=c69b30de-97f9-11e5-afb0-7831c1c8****

Common response parameters

Responses are returned in the JSON format. Every response returns a unique RequestId regardless of whether the call is successful.
  • A 2xx HTTP status code indicates a successful call.
  • A 4xx or 5xx HTTP status code indicates a failed call.

Sample responses 

{
    "RequestId":"4C467B38-3910-447D-87BC-AC049166F216"
    /*Return Result Data*/
}