Amazon Marketplace Web Service (MWS) will no longer be available after December 31, 2023. All MWS developers must migrate to Selling Partner API (SP-API) to avoid service disruptions. Refer to the Migration Hub for more information.
The processing status of the feed submission. This notification is only
sent when the processing status reaches one of two terminal states:
DONE, or CANCELLED. In other words, the
notification is sent only when feed processing is complete. For a complete list
of feed processing states, see FeedProcessingStatus enumeration.