AWS API Gateway : Execution failed due to configuration error: No match for output mapping and no default output mapping configured

amazon-web-services aws-sdk aws-lambda aws-api-gateway
Zigglzworth picture Zigglzworth · Dec 6, 2015 · Viewed 32.1k times · Source

In AWS API Gateway, I have a GET method that invokes a lambda function.

When I test the method in the API Gateway dashboard, the lambda function executes successfully but API Gateway is not mapping the context.success() call to a 200 result despite having default mapping set to yes.

Instead I get this error:

Execution failed due to configuration error: No match for output mapping and no default output mapping configured

This is my Integration Response setup: enter image description here

And this is my method response setup: enter image description here

Basically I would expect the API Gateway to recognize the successful lambda execution and then map it by default to a 200 response but that doesn't happen.

Does anyone know why this isn't working?

Answer

Jurgen picture Jurgen · Dec 9, 2015

There was an issue when saving the default integration response mapping which has been resolved. The bug caused requests to API methods that were saved incorrectly to return a 500 error, the CloudWatch logs should contain:

Execution failed due to configuration error: 
No match for output mapping and no default output mapping configured.

Since the 'ENABLE CORS' saves the default integration response, this issue also appeared in your scenario.

For more information, please refer to the AWS forums entry: https://forums.aws.amazon.com/thread.jspa?threadID=221197&tstart=0

Best,

Jurgen

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