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Comment: Updated 900901 description.

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Error codeError MessageDescriptionExample
700700API blockedThis API has been blocked temporarily. Please try again later or contact the system administrators.Invoke an API which is in the BLOCKED lifecycle state
900800
Message throttled out

The maximum number of requests that can be made to the API within a designated time period is reached and the API is throttled for the user.

Invoke an API exceeding the tier limit
900801
Hard limit exceededHard throttle limit has been reachedInvoke an API exceeding the hard throttle limit
900802Resource level throttle outMessage is throttled out because resource level has exceededSending/Receiving messages beyond authorized resource level
900803Application level throttle outMessage is throttled out because application level is exceeded

Sending/Receiving messages beyond authorized application level

900804Subscription level throttled outMessage throttled out due to subscription level throttling limit reached.Sending/Receiving messages beyond configured throttling limit of subscription level policy.
900805Message blockedAccessing an API which is blocked on user, IP, application, or API Context.An admin user can block API invocations in real time by user, IP, application, or API context. The API invocation meets the blocked condition.
900806Custom policy throttled outMessage throttled out due to exceeding the limit configured through the custom throttling policy rules.The API invocations meet custom throttle policy rules, exceeding the limits of the configured custom policy.
900807Message throttled outMessaged throttled out because of exceeding the burst control/rate limit (requests per second) in the subscription level policy.Sending/Receiving messages exceeding the configured burst control/rate limit within second.
900900

Unclassified authentication failure

An unspecified error has occurredBackend service for key validation is not accessible when trying to invoke an API
900901

Invalid credentials

Invalid authentication information provided

Using an older access token after an access token has been renewed
900909

The subscription to the API is inactive

The status of the API has changed to an inaccessible/unavailable state.Invoke an

.

900902

Missing credentials

No authentication information providedAccessing an API without Authorization: Bearer header
900905

Incorrect access token type is provided

The access token type used is not supported when invoking the API. The supported access token types are application and user accesses tokens. See Access Tokens.

Invoke an API with application token, where the resource only allows application user tokens
900906

No matching resource found in the API for the given request

A resource with the name in the request can not be found in the API.Invoke an API resource that is not available
900907

The requested API is temporarily blocked

Happens when the API user is blocked.Invoke API resource with a subscription that has been blocked by the API publisher
900908

Resource forbidden

The user invoking the API has not been granted access to the required resource.Invoke an unsubscribed API
Note

The error codes 900903 (Access token expired) and 900904 (Access token inactive) are deprecated from API Manager 1.9.0 onwards. Alternatively, error code 900901 will be sent when the token is invalid or inactive.

When the access token is invalid or inactive.
900902

Missing credentials

No authentication information providedAccessing an API without Authorization: Bearer header
900905

Incorrect access token type is provided

The access token type used is not supported when invoking the API. The supported access token types are application and user accesses tokens. See Access Tokens.

Invoke an API with application token, where the resource only allows application user tokens
900906

No matching resource found in the API for the given request

A resource with the name in the request can not be found in the API.Invoke an API resource that is not available
900907

The requested API is temporarily blocked

Happens when the API user is blocked.Invoke API resource with a subscription that has not yet been approved blocked by the administrator.
900910

The access token does not allow you to access the requested resource

Can not access the required resource with the provided access token. Check the valid resources that can be accessed with this token.

Invoke API resource with an access token that is not generated to be used with the resource's scope.
102511Incomplete payloadThe payload sent with the request API publisher
900908

Resource forbidden

The user invoking the API has not been granted access to the required resource.Invoke an unsubscribed API
900909

The subscription to the API is inactive

The status of the API has changed to an inaccessible/unavailable state.Invoke an API resource with a subscription that has not yet been approved by the administrator.
900910

The access token does not allow you to access the requested resource

Can not access the required resource with the provided access token. Check the valid resources that can be accessed with this token.

Invoke API resource with an access token that is not generated to be used with the resource's scope.
102511Incomplete payloadThe payload sent with the request is too large and the client is unable to keep the connection alive until the payload is completely transferred to the API GatewaySending a large PDF file with the POST request
Note

The error codes 900903 (Access token expired) and 900904 (Access token inactive) are deprecated from API Manager 1.9.0 onwards. Alternatively, error code 900901 will be sent when the token is invalid or inactive.

Sequences error codes


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Sequences error codes

Error codeDescription
900901
Production/sandbox key offered to the API with no production/sandbox endpoint
400
Server cannot process the request due to an error in the request sent by the client
403
No matching resource found in the API for the given request

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Info

The HTTP Status Codes and the corresponding error codes from the error responses are given below.

HTTP Status CodeError Code
400102511
401900901, 900902, 900905, 900907, 900909
403900906, 900908, 900910
429900800, 900802, 900803, 900804, 900805, 900806, 900807
500900900
503700700, 900801

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  1. Start the WSO2 API Manager.

  2. Go to <API-M_HOME> /repository/deployment/server/synapse-configs/default/sequences directory and create the file convert.xml as follows.

    Code Block
    languagexml
    <sequence xmlns="http://ws.apache.org/ns/synapse" name="convert">
        <payloadFactory media-type="xml">
            <format>
                <am:fault xmlns:am="http://wso2.org/apimanager">
                    <am:code>$1</am:code>
                    <am:type>Status report</am:type>
                    <am:message>Runtime Error</am:message>
                    <am:description>$2</am:description>
                </am:fault>
            </format>
            <args>
                <arg evaluator="xml" expression="$ctx:ERROR_CODE"/>
                <arg evaluator="xml" expression="$ctx:ERROR_MESSAGE"/>
            </args>
        </payloadFactory>
        <property name="RESPONSE" value="true"/>
        <header name="To" action="remove"/>
        <property name="HTTP_SC" value="555" scope="axis2"/>
        <property name="NO_ENTITY_BODY" scope="axis2" action="remove"/>
        <property name="ContentType" scope="axis2" action="remove"/>
        <property name="Authorization" scope="transport" action="remove"/>
        <property name="Access-Control-Allow-Origin" value="*" scope="transport"/>
        <property name="Host" scope="transport" action="remove"/>
        <property name="Accept" scope="transport" action="remove"/>
        <property name="X-JWT-Assertion" scope="transport" action="remove"/>
        <property name="messageType" value="application/json" scope="axis2"/>
        <send/>
    </sequence>
    Tip

    Alternatively, you can use the Source View of the API-M Management Console as follows to edit the synapse configuration:

    • Sign in to the Management Console. (https://<Server Host>:9443/carbon).
    • Go to Manager -> Source View.
    • Copy the content of the sequence in convert.xml, paste it as a new sequence in the source view and update it.
  3. Check the terminal logs to see whether there are issues in the deployment. 
    If the deployment is successful, you see a message similar to the following in the system logs:

    Code Block
    INFO - DependencyTracker Sequence : convert was added to the Synapse configuration successfully
    INFO - SequenceDeployer Sequence named 'convert' has been deployed from file : <API-M_HOME>/repository/deployment/server/synapse-configs/default/sequences/convert.xml
  4. Include the sequence that you just deployed in a sequence of your choice.
    For this example, let's add this custom sequence in the _auth_failure_handler_ sequence.

    Code Block
    <sequence name="_auth_failure_handler_" xmlns="http://ws.apache.org/ns/synapse">
        ...
        <sequence key="convert"/>
        <drop/>
    </sequence>
  5. Check the terminal and see whether there are any errors with the _auth_failure_handler_ sequence deployment.
    If the deployment is successful, you see a message similar to the following in the system logs:

    Code Block
    INFO - DependencyTracker Sequence : _auth_failure_handler_ was added to the Synapse configuration successfully
    INFO - SequenceDeployer Sequence: _auth_failure_handler_ has been updated from the file: <API-M_HOME>/repository/deployment/server/synapse-configs/default/sequences/_auth_failure_handler_.xml
  6. Invoke the API with the respective criteria in order to trigger the sequence. 
    In this example, let's view the menu on the PizzaShack API and invoke the API with an incorrect token.

    Localtabgroup
    Localtab
    activetrue
    idformat-menu
    titleFormat
    Code Block
    curl -v -H "Authorization: Bearer <Access_Token>" http://localhost:8280/<API_name>/<version>/<context>
    Localtab
    idexample-menu
    titleExample
    Code Block
    curl -k -v -X GET "https://localhost:8243/pizzashack/1.0.0/menu" -H "accept: application/json" -H "Authorization: Bearer fb119e84-9542-3194-93dc-1ddddaaa1111"
    Localtab
    idSampleResponse
    titleSample Response
    * Trying ::1... * TCP_NODELAY set * Connection failed * connect to ::1 port 8243 failed: Connection refused * Trying 127.0.0.1... * TCP_NODELAY set * Connected to localhost (127.0.0.1) port 8243 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH * successfully set certificate verify locations: * CAfile: /etc/ssl/cert.pem CApath: none * TLSv1.2 (OUT), TLS handshake, Client hello (1): * TLSv1.2 (IN), TLS handshake, Server hello (2): * TLSv1.2 (IN), TLS handshake, Certificate (11): * TLSv1.2 (IN), TLS handshake, Server key exchange (12): * TLSv1.2 (IN), TLS handshake, Server finished (14): * TLSv1.2 (OUT), TLS handshake, Client key exchange (16): * TLSv1.2 (OUT), TLS change cipher, Client hello (1): * TLSv1.2 (OUT), TLS handshake, Finished (20): * TLSv1.2 (IN), TLS change cipher, Client hello (1): * TLSv1.2 (IN), TLS handshake, Finished (20): * SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 * ALPN, server did not agree to a protocol * Server certificate: * subject: C=US; ST=CA; L=Mountain View; O=WSO2; CN=localhost * start date: Jul 19 06:52:51 2017 GMT * expire date: Jul 17 06:52:51 2027 GMT * issuer: C=US; ST=CA; L=Mountain View; O=WSO2; CN=localhost * SSL certificate verify result: self signed certificate (18), continuing anyway.
    Code Block
    curl -v -H "Authorization: Bearer <Access_Token>" http://localhost:8280/<API_name>/<version>/<context>
    Localtab
    idexample-menu
    titleExample
    Code Block
    curl -k -v -X GET "https://localhost:8243/pizzashack/1.0.0/menu" -H "accept: application/json" -H "Authorization: Bearer fb119e84-9542-3194-93dc-1ddddaaa1111"
    Localtab
    idSampleResponse
    titleSample Response
    Code Block
    > GET /pizzashack/1.0.0/menu HTTP/1.1
    > Host: localhost:8243
    > User-Agent: curl/7.54.0
    > accept: application/json
    > Authorization: Bearer fb119e84-9542-3194-93dc-1ddddaaa1111
    > 
    < HTTP/1.1 555 
    < Access-Control-Allow-Origin: *
    < Access-Control-Allow-Methods: GET
    < Access-Control-Allow-Headers: authorization,Access-Control-Allow-Origin,Content-Type,SOAPAction
    < Content-Type: application/json; charset=UTF-8
    < Date: Fri, 04 Jan 2019 09:53:56 GMT
    < Transfer-Encoding: chunked
    < 
    {"fault":{"code":900901,"type":"Status report","message":"Runtime Error","description":"Invalid Credentials"}}

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Fault SequenceDescription
fault.xml

This is the primary fault sequence that gets invoked when an error occurs during the execution of an API resources

main.xmlThis sequence is called when the endpoint being called does not exist
_auth_failure_handler.xmlThis sequence is called when an API authentication error is encountered
_production_key_error.xmlThis sequence is called when a Production key is used to invoke an API that does not have a Production endpoint defined
_sandbox_key_error.xmlThis sequence is called when a Sandbox key is used to invoke an API that does not have a Sandbox endpoint defined
_throttle_out_handler.xmlThis sequence is called when a given request to an API gets throttled out
_token_fault.xmlThis sequence is called when there is an error in invoking the token API
_resource_mismatch_handler.xmlThis sequence is called when a matching resource cannot be found by the gateway to the corresponding resource being invoked_build_.xml

_cors_request_handler_.xml

_threat_fault_.xml
dispatchSeq.xmloutDispatchSeq.xml

_cors_request_handler_.xml

This sequence enables sending CORS specific headers when the CORS specific configuration (CORSConfiguration) is enabled in WSO2 API Manager in the <API-M_HOME>/repository/conf/api-manager.xml file.
_threat_fault_.xml

This sequence is called to send error messages with regard to threat detection.

dispatchSeq.xmlThis sequence is defined as a default handler for any inbound WebSocket calls.
outDispatchSeq.xmlThis sequence is defined to handle any outbound WebSocket calls.
Info

The default sequences can also be customized as shown in the section above.