Amazon Marketplace Web Service (MWS) will no longer be available after March 31, 2024. All MWS developers must migrate to Selling Partner API (SP-API) to avoid service disruptions. Refer to the Migration Hub for more information.
Feeds come in two types: flat text files, which you can build using a spreadsheet application, and XML documents. You can find templates for creating flat text files and XML files for inventory and orders on Seller Central for your locale.
If you are using XML-formatted feeds, see Selling on Amazon Guide to XML for guidance. If you need to determine the correct ItemType for a feed, see the Category-Specific XSDs table in the Seller Central Help.