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/758a5954936b/https://releaseradar.jp/en/updates/yahoo-shopping/758a5954936b/Wed, 21 Oct 2026 15:00:00 GMTNewYahoo! Shopping plans to add fields for scheduled item point multipliers to its item registration API, item lookup API, and upload format. ・Plans to add request parameters period_point_code, period_point_code_start, and period_point_code_end to the item registration API (editItem) ・Plans to add response fields PeriodPointCode, PeriodPointCodeStart, and PeriodPointCodeEnd to the item lookup API (getItem) ・Plans to add fields period-point-code, period-point-code-start, and period-point-code-end to the upload format ・Setting a scheduled period requires specifying all three fields (multiplier, start datetime, and end datetime in YYYYMMDDHHMM format), and specifying only one or two returns an error ・Because editItem performs an overwrite update, omitting the three fields when updating other item information clears any existing scheduled period settings https://developer.yahoo.co.jp/changelog/2026-10-22-shopping423.htmlhttps://releaseradar.jp/en/updates/yahoo-shopping/fa8417a567a5/https://releaseradar.jp/en/updates/yahoo-shopping/fa8417a567a5/Wed, 21 Oct 2026 15:00:00 GMTMaintenanceYahoo! Shopping will perform scheduled maintenance on its Order APIs, making all order-related APIs temporarily unavailable. ・Scheduled for November 4, 2026 from 00:30 to 06:00 JST (planned for 5.5 hours, end time may vary slightly). ・All order-related APIs are unavailable during the maintenance window. ・The test environment (Sandbox) remains available during the maintenance window. https://developer.yahoo.co.jp/changelog/2026-10-22-shopping422.htmlhttps://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/718757136a83/https://releaseradar.jp/en/updates/yahoo-shopping/718757136a83/Tue, 15 Sep 2026 15:00:00 GMTMaintenanceScheduled PayPay system maintenance on Yahoo! Shopping will temporarily restrict amount changes and delay refunds across four order APIs. ・Maintenance runs on September 28, 2026 from 01:30 to 05:00, with the end time subject to slight change ・Changing order amounts for PayPay balance or PayPay credit payments is unavailable during the window ・Refund processing for PayPay payments is delayed when changing the payment method to bank transfer or cash on delivery, or when canceling an order ・Affected APIs are 注文内容変更API, 注文ステータス変更API, 注文ライン追加API, and 注文分割API https://developer.yahoo.co.jp/changelog/2026-09-16-shopping420.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.htmlhttps://releaseradar.jp/en/updates/yahoo-shopping/a8e6744d420f/https://releaseradar.jp/en/updates/yahoo-shopping/a8e6744d420f/Tue, 11 Aug 2026 15:00:00 GMTDeprecationYahoo! Shopping plans to end the option to select SoftBank registered addresses for shipping and billing on September 17, 2026. ・The change is scheduled to take effect on September 17, 2026 (rescheduled from September 16, 2026). ・For orders in the Order Details API where OrderTime is on or after September 17, 2026, BillAddressFrom will no longer return "SB" (SoftBank registered address). ・Orders with an OrderTime on or before September 17, 2026 will continue to return this value. https://developer.yahoo.co.jp/changelog/2026-08-12-shopping418.html