I have messages being placed in a Dead Letter Queue (DLQ) that I created. The AWS Lambda Function that processed these messages failed the messages more than the allowed number of times, and were therefore put into the DLQ. According to the Lambda Docs: Lambda sends the event to the dead-letter queue as-is, with additional information in attributes. And there should be some Attributes on the message: RequestID (string) ErrorCode (Number) ErrorMessage (string) However, I don’t see those attributes.