Using the Amazon SQS message deduplication ID

The message deduplication ID is a token used to prevent duplicate message delivery in Amazon SQS FIFO queues only. It ensures that, within a 5-minute deduplication interval, only one copy of a message with the same deduplication ID will be processed and delivered. If a message with a specific deduplication ID has already been accepted, any subsequent messages with the same ID will be acknowledged but not delivered to the queue consumers.