Status codes-Link IoT Edge(IoT Edge)-阿里云帮助中心

The following tables list the status codes for edge APIs.

HTTP status code	Error code (Code)	Description
200 OK	None	The API call was successful.
201 Created	None	The request was successful and the server created a new resource.
400 Bad Request	BadRequest	The request has incorrect semantics. The server cannot understand the request. Do not resubmit the request without modifying it. For more information, see the Detailed error messages for the 400 Bad Request status code table below.
401 Unauthorized	Unauthorized	The identity authentication cookie for the target resource is incorrect. Call the CreateAuthCookie API operation again to update the cookie. Otherwise, you cannot call other API operations.
403 Forbidden	Forbidden	The server understands the request but refuses to execute it. Verify that the current user has permission to call the API operation.
404 Not Found	NotFound	The request failed. The requested resource was not found on the server. Confirm that the request parameters are correct.
405 Method Not Allowed	MethodNotAllowed	The request method specified in the request line cannot be used for the requested resource. For example, the POST method is not supported.
500 Internal Server Error	InternalServerError	An internal server error occurred. For more information, see the Detailed error messages for the 500 Internal Server Error status code table below. Note If a `500 Internal Server Error` occurs, check the error message and log content first to troubleshoot the issue.
503 Service Unavailable	ServiceUnavailable	The server cannot handle the request due to temporary server maintenance or overload.

Table 1. Detailed error messages for the 400 Bad Request status code
Error code (Code)	Description
InvalidParameter	A request parameter is invalid. Enter the correct request parameters and retry.
MissingParameter	A required request parameter is missing. Enter the correct request parameters and retry.

Table 2. Detailed error messages for the 500 Internal Server Error status code
Error code (Code)	Description
Cookie.Handler.Create	Failed to create the identity authentication cookie.
Cookie.Set	Failed to save the identity authentication cookie.
HMAC	The Hash-based Message Authentication Code (HMAC) operation for the authentication message failed.
Connection.Create	Failed to establish a connection with the upstream service.
Connection.Lost	The connection to the upstream service is lost.
Message.Create	Failed to create the message to be sent to the upstream service.
Message.SendAndReply	An error occurred when sending a message to or receiving a message from the upstream service.
Message.InvalidReply	The format of the response from the upstream service is incorrect.
Message.FailedReply	The response from the upstream service indicates that the API call failed. This error code is returned if the error code (Code) from the upstream service is not in the list of errors that use the `Service.{name}.{error}` format.
Service.NotExist	The upstream service does not exist. This error code is typically reported when the upstream service is not started or has exited.
Service.Data.Get	Failed to get data from the data center.
Service.Data.Set	Failed to set data in the data center.
Service.Data.KeyNotExist	Failed to get data from the data center because the data key does not exist.
Service.Thing.Call	Failed to call the device API operation. For more information, see Device access status codes.
Service.Function.NotExist	The called function does not exist.
Service.Function.Timeout	The function execution timed out.
Service.Scene.NotExist	The scene rule does not exist.
Service.Scene.NotAtLevel0	The operation is denied because the scene orchestration is not in Normal mode. For example, it is in Sceneless mode. Change the mode to Normal and retry.