Last updated: 2019-09-09 20:17:28

Response for Successful Requests

For example, when calling CVM API DescribeInstancesStatus (version: 2017-03-12) to view the status of instances, if the request has succeeded, you may see the response as shown below:

    "Response": {
        "TotalCount": 0,
        "InstanceStatusSet": [],
        "RequestId": "b5b41468-520d-4192-b42f-595cc34b6c1c"
  • The API will return Response, which contains RequestId, as long as it processes the request. It does not matter if the request is successful or not.
  • RequestId is the unique ID of an API request. Contact us with this ID when an exception occurs.
  • Except for the fixed fields, all fields are action-specified. For the definitions of action-specified fields, see the corresponding API documentation. In this example, TotalCount and InstanceStatusSetare the fields specified by the API DescribeInstancesStatus. 0 TotalCount means that the requester owns 0 CVM instance so the InstanceStatusSet is empty.

Response for Failed Requests

If the call has failed, you may see the response as shown below:

    "Response": {
        "Error": {
            "Code": "AuthFailure.SignatureFailure",
            "Message": "The provided credentials could not be validated. Please check your signature is correct."
        "RequestId": "ed93f3cb-f35e-473f-b9f3-0d451b8b79c6"
  • The presence of the Error field indicates that the request has failed. A response for failed request must include Error, along with Code and Message.
  • Code is the code of the error that helps you identify the cause and solution. There are two types of error codes so you may find the code in either common error codes or API-specified error codes. *Message describes the cause of this error and it may change as Tencent Cloud services update.
  • RequestId is the unique ID of an API request. Contact us with this ID when an exception occurs.

Common Error Codes

If there is an Error field in the response, it means that the API call failed. The Code field in Error indicates the error code. The following table lists the common error codes that all actions can return.

Error Code Description
AuthFailure.InvalidSecretId Invalid key (not TencentCloud API key type).
AuthFailure.MFAFailure MFA failure
AuthFailure.SecretIdNotFound Key does not exist.
AuthFailure.SignatureExpire Signature expired
AuthFailure.SignatureFailure Signature error.
AuthFailure.TokenFailure Token error.
AuthFailure.UnauthorizedOperation No CAM authorization
DryRunOperation DryRun Operation. It means that the request would have succeeded, but the DryRun parameter was used.
FailedOperation Operation failed
InternalError Internal error
InvalidAction API does not exist
InvalidParameter Incorrect parameter
InvalidParameterValue Invalid parameter value
LimitExceeded Quota limit is exceeded
MissingParameter A parameter is missing
NoSuchVersion The API version does not exist
RequestLimitExceeded The request rate limit is exceeded
ResourceInUse Resource is occupied
ResourceInsufficient Insufficient resource
ResourceNotFound Resource does not exist
ResourceUnavailable Resource is unavailable
UnauthorizedOperation Unauthorized operation
UnknownParameter Unknown parameter
UnsupportedOperation Unsupported operation
UnsupportedProtocol Unsupported HTTP(S) request protocol. Only GET and POST requests are supported.
UnsupportedRegion Unsupported region