The App Store Connect REST API lets you customize and automate tasks across developer tools, giving you greater flexibility and efficiency in your workflows. Starting in November 2022, you’ll need to use this API instead of the XML feed to automate management of in-app purchases, subscriptions, metadata, and app pricing. The XML feed will continue to support existing Game Center management functionality.
Learn about the App Store Connect API
Upcoming transition from the XML feed to the App Store Connect API