Serverless Stack

Does anyone know what the flow is for a cognito postConfirmation trigger is if it fails? Cant really find anything on the AWS docs unless I am blind

<https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-post-confirmation.html>

I think it doesn't change anything since cognito doesn't expect any response

but maybe you can do a test and return 401 just to check if the confirmation is completed

But I don't think it will change anything in the confirmation flow since the user is already confirmed when *post* confirmation runs..
Maybe if you want to prevent something use the pre-* triggers <https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html>
<https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-authentication.html>
<https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-token-generation.html>