Using the message deduplication ID in Amazon SQS

MessageDeduplicationId is a token used only in Amazon SQS FIFO queues to prevent duplicate message delivery. It ensures that within a 5-minute deduplication window, only one instance of a message with the same deduplication ID is processed and delivered.

If Amazon SQS has already accepted a message with a specific deduplication ID, any subsequent messages with the same ID will be acknowledged but not delivered to consumers.