本文为您介绍调用云服务器API时涉及的公共错误码信息，平台错误码请参见公共错误码。
| 错误代码Code | HTTP状态码 | 错误信息Message | 处理措施 |
|---|---|---|---|
| MissingParameter | 400 | The request is missing %s parameter. | 关键参数缺失，例如Action, Version参数。 |
| MissingRequestInfo | 400 | The request is missing %s information. | 缺少请求必要信息，例如：Accesskey，service，region等。 |
| InnerApiNeedAccountInfo | 400 | The inner request should have account info. | Service AK/SK请求内部服务时缺少了账号信息。 |
| InvalidAuthorization | 400 | Invalid 'Authorization' header, Pls check authorization header. | Authorization头格式错误，检查Authorization。 |
| InvalidCredential | 400 | Invalid credential in 'Authorization', Pls check credential in authorization header. | Authorization头中的Credential格式错误，检查Credential。 |
| MissingAuthenticationToken | 401 | Request is missing Authentication Token. | 缺少身份认证的必要信息，例如Auth信息。 |
| MissingSignature | 401 | The request is missing signature. | 缺少签名结果。 |
| InvalidAccessKey | 401 | The accesskey [%s] included in the request is invalid. | 请求的AK不合法。 |
| SignatureDoesNotMatch | 401 | The request signature we calculated does not match the signature you provided. Check your Secret Access Key and signing method. Consult the service documentation for details. | 签名结果不正确。 |
| InvalidSecretToken | 401 | Invalid secret token, msg: %s. | 错误的STS or STS2，可能是多种错误，例如签名错误、过期等。 |
| LackProjectPolicy | 403 | Request was rejected because of lack of project policy. | 请求需要验证Project的权限，当前Project权限验证不合法。 |
| InvalidTimestamp | 403 | The Signature of the request is expired. | 请求过期或请求的签名时间来自未来。 |
| ServiceShouldCallSelfApi | 403 | The service(%s) should call self-api. | 使用Service AK/SK访问请求，仅能访问自己的接口和公共服务的接口。公共服务例如：IAM。 |
| LackPolicy | 403 | Request was rejected because of lack of policy. | 子用户请求缺少权限（默认为deny）。 |
| AccessDenied | 403 | User is not authorized to perform: %s on resource: %s. | 子用户拥有的权限不支持当前操作。 |
| ServiceNotFound | 404 | This service[%s] not found. | 请求的服务不存在。 |
| InvalidActionOrVersion | 404 | Could not find operation %s for version %s. | 请求接口不存在。 |
| MethodNotAllowed | 405 | HTTP Method Not Allowed. | Http method不合法。 |
| PendingVerification | 412 | Your account has not passed the real-name authentication yet. | 账户未实名认证。 |
| FlowLimitExceeded | 429 | Request was rejected because the request speed of this openAPI is beyond the current flow control limit. | 请求过于频繁，超出了基本限速。 |
| UndefinedError | 500 | Undefined Internal Error. Pls Contact With Admin. | 一般不出现这个问题，这是系统开发兜底的错误提示。 |
| InternalError | 500 | Service has some internal Error. Pls Contact With Admin. | 内部错误，例如DB error。 |
| FailToConnect | 502 | Top Fail to Connect to Internal Service. | 业务服务连接不上。 |
| InternalServiceError | 502 | Service has some internal Error. Pls Contact With Admin. | 业务服务存在故障，这里的业务一般指具体的imagex、vod。 |
| ServiceUnavailableTemp | 503 | Service is busy, please try again later. | 处于熔断状态的服务暂时不可访问，稍后重试。 |
| InternalServiceTimeout | 504 | Internal Service is timeout. Pls Contact With Admin. | 内部服务执行超时。 |