Last updated: 2019-09-09 11:36:30

Response for Successful Requests

For example, when calling CVM API DescribeInstancesStatus (version 2017-03-12), if this request is successfully, the response is as followed:

    "Response": {
        "TotalCount": 0,
        "InstanceStatusSet": [],
        "RequestId": "b5b41468-520d-4192-b42f-595cc34b6c1c"
  • Response and its RequestId are common fields and are always returned as long as the API request is processed, regardless of whether the request is successful or not.
  • RequestId is for identifying an API request. If an API exception occurs, please contact us with RequestId which helps locate the cause of the error.
  • Any fields other than the common fields are API-specific fields. For more information on such fields, see the relevant API documentation. In this example, TotalCount and InstanceStatusSet are specific to the API DescribeInstancesStatus. Since the user who initiated the request does not have a CVM instance yet, 0 is returned for TotalCount and InstanceStatusSet is left empty.

Response for Failed Requests

If the request fails, the response is as follows:

    "Response": {
        "Error": {
            "Code": "AuthFailure.SignatureFailure",
            "Message": "The provided credentials could not be validated. Please ensure your signature is correct."
        "RequestId": "ed93f3cb-f35e-473f-b9f3-0d451b8b79c6"
  • Error indicates request failure. Its two fields, Code and Message, will be returned in case of failure.
  • Code indicates the error code. When an error occurs with the request, you can use the error code to find the cause and solution for the error in the list of common error codes or API-specific error codes.
  • Message describes the cause of the error. It may be updated without notice.
  • RequestId is for identifying an API request. If an API exception occurs, please contact us with RequestId which helps locate the cause of the error.

Common Error Codes

When you see the Error field in the response, it means that your request has failed; the Code field indicates the error code. The following are common error codes that all requests 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 Invalid signature.
AuthFailure.TokenFailure Invalid token.
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