https://releaseradar.jp/en/Official release notes and API changes from freee, kintone, SmartHR, LINE, and other Japanese SaaS products for AI builders.enhttps://releaseradar.jp/en/updates/yahoo-shopping/aa65c03f256b/https://releaseradar.jp/en/updates/yahoo-shopping/aa65c03f256b/Mon, 28 Sep 2026 15:00:00 GMTMaintenanceYahoo! Shopping will perform scheduled maintenance on Order APIs and the Store Editor on October 6, 2026, making some APIs temporarily unavailable. ・Order APIs, including the sandbox environment, will be unavailable on October 6, 2026 from 1:00 AM to 6:00 AM. ・Store Editor maintenance will run on October 6, 2026 from 1:00 AM to 7:00 AM, including the sandbox environment. ・During the Store Editor maintenance, APIs for listing management, items, products/SHP categories/brands, store categories, images, and design will be unavailable. ・During the Store Editor maintenance, APIs for inventory, store inventory, inquiry management, and subscriptions will remain available. https://developer.yahoo.co.jp/changelog/2026-09-29-shopping421.htmlhttps://releaseradar.jp/en/updates/yahoo-shopping/6e79545eb94f/https://releaseradar.jp/en/updates/yahoo-shopping/6e79545eb94f/Mon, 31 Aug 2026 15:00:00 GMTMaintenanceYahoo! Shopping will conduct maintenance on order APIs, subscription APIs, and Store Editor on September 16, 2026, temporarily suspending several APIs. ・Order and subscription APIs are unavailable on 2026-09-16 from 01:00 to 06:00, including in Sandbox. ・Store Editor maintenance runs on 2026-09-16 from 01:00 to 08:00 (updated from 09:00), including in sandbox. ・APIs for listing management, items, products/SHP categories/brands, store categories, images, design, and stock updates are unavailable during Store Editor maintenance. ・Non-update stock, store stock, and inquiry management APIs remain available during the maintenance window. https://developer.yahoo.co.jp/changelog/2026-09-01-shopping419.html