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.
Shipping inventory to Amazon's fulfillment network
Amazon recommends this workflow to ship inventory to Amazon's fulfillment network. Once in the fulfillment network, a seller's
items can be used to fulfill orders on Amazon's retail website or through other
Following these steps to ship inventory to Amazon's fulfillment network.