Response Code

HTTP Status Code

Code	Explanation	Solution
200 - OK	Successful Response	N/A
401 - Unauthorized	Unauthorized	Check the AppId, signature timestamp, and other information for errors as prompted.
500 - Server Error	System Error	Retry according to the specific error guidelines of the API.

General

Code	Explanation	Solution
OK	Successful Response
Common.Auth.Authorization_Header_Not_Found	Signature information not found	Check whether the HTTP Authorization Header is set when requesting the gateway interface
Common.Auth.Sign_Failed	Signature failed	Check whether the request is a POST request, whether the request address is correct, and whether the appId/appSecret pair is correct
Common.Auth.Sign_Timeout	The signature timestamp has expired	Check the server time and platform time difference
Common.Auth.Invalid_Sign	Invalid signature	Check that the signature structure is correct
Common.Auth.Auth_Failed	AppId permission validation failed	The API request permission is not available
Common.Auth.AppId_Not_Found	The AppId does not exist	Check that the signature structure is correct
Common.Auth.Invalid_AppId	Invalid AppId	Check that the AppId is correct
Common.Http_Request_Error	The request parameters are incorrectly formatted	Refer to the API documentation to modify the format of the request parameters
Common.Request_Parameter_Error	The value of the request parameter is incorrect	Refer to errorMessage to modify the value of the request parameter
Common.Illegal_Url	Failed to verify the URL of the request parameter	Refer to errorMessage, check the URL format of the request parameter, and register/whitelist the domain name on the Developer - App Secret page of the merchant dashboard