Error Codes

If an error code starting with APIGW is displayed when you call an API, seek solutions in the following table.

**Table 1** Error codes
Error Code	Error Message	HTTP Status Code	Description	Corrective Action
APIGW.0101	The API does not exist or has not been published in the environment.	404	The API does not exist or has not been published in the environment.	Rectify the fault by following the instructions in What Should I Do If "The API does not exist or has not been published in the environment." Is Displayed?.
APIGW.0101	The API does not exist.	404	The request method does not exist.	Check whether the request method is the same as the method specified for the API.
APIGW.0103	The backend does not exist.	404	The backend service is not found.	Contact technical support.
APIGW.0104	The plug-ins do not exist.	400	No plugin configurations are found.	Contact technical support.
APIGW.0105	The backend configurations do not exist.	400	No backend configurations are found.	Contact technical support.
APIGW.0106	Orchestration error.	400	Orchestration error.	Check whether the frontend and backend parameters are properly set for the API.
APIGW.0201	API request error.	400	Invalid request parameters.	Set valid request parameters.
APIGW.0201	Request entity too large.	413	The request body exceeds 12 MB.	Reduce the size of the request body.
APIGW.0201	Request URI too large.	414	The request URI is too large.	Reduce the size of the request URI.
APIGW.0201	Request headers too large.	494	The request headers are too large.	Reduce the size of the request headers.
APIGW.0201	Backend unavailable.	502	The backend service is currently unavailable.	Check whether the backend address configured for the API is accessible.
APIGW.0201	Backend timeout.	504	The backend service timed out.	Increase the timeout duration of the backend service or shorten the processing time.
APIGW.0301	Incorrect IAM authentication information.	401	The IAM authentication information is incorrect.	Rectify the fault by following the instructions in Common Errors Related to IAM Authentication Information.
APIGW.0302	The IAM user is not authorized to access the API.	403	The IAM user is not allowed to access the API.	Check whether the user has been blacklisted or whitelisted.
APIGW.0303	Incorrect app authentication information.	401	The app authentication information is incorrect.	Perform the following checks for app authentication: Check whether the request method, path, query parameters, and request body are consistent with those used for signing. Check whether the client time is correct. Check whether the signing code is correct by referring to Calling APIs Through App Authentication. In the case of AppCode-based simple authentication, check whether the request contains the X-Apig-AppCode header.
APIGW.0304	The app is not authorized to access the API.	403	The app is not allowed to access the API.	Check whether the app has been authorized to access the API.
APIGW.0305	Incorrect authentication information.	401	The authentication information is incorrect.	Check whether the authentication information is correct.
APIGW.0306	API access denied.	403	Access to the API is not allowed.	Check whether you have been authorized to access the API.
APIGW.0307	The token must be updated.	401	The token needs to be updated.	Obtain a new token from IAM. An API of another region may have been called. Check the API URL.
APIGW.0308	The throttling threshold has been reached.	429	The request throttling threshold is reached.	Try again after the throttling resumes. By default, an API can be accessed a maximum of 200 times per second. The rate limits of cloud service APIs cannot be adjusted. Try again after the throttling resumes. To adjust the rate limit of an API you have created in API Gateway, contact technical support by submitting a service ticket.
APIGW.0310	The project is unavailable.	403	The project is currently unavailable.	Select another project and try again.
APIGW.0311	Incorrect debugging authentication information.	401	The debugging authentication information is incorrect.	Contact technical support.
APIGW.0401	Unknown client IP address.	403	The client IP address cannot be identified.	Contact technical support.
APIGW.0402	The IP address is not authorized to access the API.	403	The IP address is not allowed to access the API.	Check whether the IP address has been blacklisted or whitelisted.
APIGW.0404	Access to the backend IP address has been denied.	403	The backend IP address cannot be accessed.	The backend IP address or the IP address of the backend domain cannot be accessed. Check whether the IP address exists or has been blacklisted or whitelisted.
APIGW.0501	The app quota has been used up.	405	The app quota has been reached.	Increase the app quota.
APIGW.0502	The app has been frozen.	405	The app has been frozen.	Account balance is insufficient. Go to the Funds Management page to top up your account.
APIGW.0601	Internal server error.	500	Internal error.	Contact technical support.
APIGW.0602	Bad request.	400	Invalid request.	Check whether the request is valid.
APIGW.0605	Domain name resolution failed.	500	Domain name resolution failed.	Check whether the domain name is correct and has been bound to a correct backend address.
APIGW.0606	Failed to load the API configurations.	500	API configurations are not loaded.	Contact technical support.
APIGW.0607	The following protocol is supported: {xxx}	400	The protocol is not supported. Only xxx is supported. xxx indicates the protocol in a response.	Use HTTP or HTTPS to access the API.
APIGW.0608	Failed to obtain the admin token.	500	The tenant information cannot be obtained.	Contact technical support.
APIGW.0609	The VPC backend does not exist.	500	The VPC backend service cannot be found.	Contact technical support.
APIGW.0610	No backend available.	502	No backend services are available.	Check whether all backends are available.
APIGW.0611	The backend port does not exist.	500	The backend port is not found.	Contact technical support.
APIGW.0612	An API cannot call itself.	500	An API cannot call itself.	Modify the backend configurations, and ensure that the number of layers the API is recursively called does not exceed 10.
APIGW.0613	The IAM service is currently unavailable.	503	IAM is currently unavailable.	Contact technical support.
APIGW.0705	Backend signature calculation failed.	500	Backend signature calculation failed.	Contact technical support.
APIGW.0801	The service is unavailable in the currently selected region.	403	The service is inaccessible in the current region.	Check whether the service supports cross-region access.
APIGW.0802	The IAM user is forbidden in the currently selected region.	403	The IAM user is not allowed to access the region.	Contact technical support.