Do I need to setup the Integration Response and Method Response for each 400 error

Question

When working with API Gateway Integration Response and Method Response. We have multiple 400 errors, they all return the same formated object but the status numer changes.

I think I am not understanding this correctly. Do I need to setup the Integration Response and Method Response for each 400 error. It is a lot of duplication, in the integration response I am only returning $input.path('$.errorMessage'); in the Mapping templates.

Is the Method response status code what is passed as the response code? Is there a way to create one 400 Integration Response and Method Response and dynamically change the status code that gets passed as the response?

List of 400 errors
401 Access denied
402 Account inactive
404 Not found
406 Not acceptable
408 Request timeout
422 Request not processed
429 Too many requests

Sample of lambda error response
{
	status: 422,
	statusText: "Unknown Error",
	message: "Unable to process.":,
	errors: [error01,error02],
}

Thank You

AWS-User-Nitin · Answer

One approach could be is to use a more generic 400 error code for client-side errors and include the specific error detail within the response body. This way, we can define a single Method Response and Integration Response for the 400 status code, and use the response body to convey the specific error (401, 402, 404, etc.).

Do I need to setup the Integration Response and Method Response for each 400 error

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