This topic describes client errors.
| HTTP status code | Error code | Error message | Description |
|---|---|---|---|
| 400 | MissingParameter | The input parameter <parameter name> that is mandatory for processing this request is not supplied
|
The error message returned because one or more required parameters are not specified. |
| 400 | InvalidParameter | The specified value of parameter <parameter name> is not valid.
|
The error message returned because the value that you specified for a parameter is invalid. |
| 400 | UnsupportedOperation | The specified action is not supported. | The error message returned because the specified API operation is invalid. |
| 400 | NoSuchVersion | The specified version does not exist. | The error message returned because the specified version is invalid. |
| 400 | Throttling | Request was denied due to request throttling. | The error message returned because the specified operation is denied by the system due to throttling. |
| 400 | InvalidAccessKeyId.NotFound | The Access Key ID provided does not exist in our records. | The error message returned because the specified AccessKey pair is invalid. |
| 403 | Forbidden | Users are not authorized to operate on the specified resource. | The error message returned because you are not authorized to perform the specified operation. |
| 403 | Forbidden.RiskControl | This operation is forbidden by Aliyun Risk Control system. | The error message returned because the specified operation is forbidden by the risk control system. |
| 403 | SignatureDoesNotMatch | The signature we calculated does not match the one you provided. | The error message returned because the specified signature is invalid. |
| 403 | Forbidden.Unsubscribed | Do not have permission to access this API. | The error message returned because Auto Scaling is not activated, and you are not authorized to call the Auto Scaling API. |
| 403 | Forbidden.UserVerification | Your user account is not verified by Aliyun. | The error message returned because real-name verification is not complete. |
| 400 | ResourceNotAvailable | Resource you requested is not available in this region or zone. | The error message returned because Auto Scaling is unavailable in the specified region. |