AWS Lambda error on Cognito User Pool trigger

Question

I\'m trying to insert a record into DynamoDB invoking \"Pre sign-up\" trigger of Cognito User Pool.

Lambda function is pretty simple for testing purposes but there i

Answer 1

@user3479125 To do the same in python just return an event as is, or with modifications in datasets.

This code is supposed to run between the mobile device and cognito, so it can modify the event and it should return it back, so Sync event will finish successfully.

Some more explanations here