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/line/0f67c5f88447/https://releaseradar.jp/en/updates/line/0f67c5f88447/Mon, 26 Oct 2026 15:00:00 GMTImprovedThe maximum character length allowed for URI properties in Messaging API URI actions has been expanded. ・Increased the maximum character limit for the uri and altUri.desktop properties from 1,000 to 10,000 ・altUri.desktop is valid only when a URI action is associated with a Flex Message https://developers.line.biz/ja/news/2026/10/27/uri-action/https://releaseradar.jp/en/updates/line/b14ba7896227/https://releaseradar.jp/en/updates/line/b14ba7896227/Sun, 27 Sep 2026 15:00:00 GMTDeprecationLINE Developers will discontinue the demo apps provided on its site for several products on September 30, 2026. ・Removed demo app pages and sections from the LINE Developers site on September 28, 2026 ・Includes seven LINE MINI App demos such as store reservation, mobile order, and membership card https://developers.line.biz/ja/news/2026/09/28/demo-apps-discontinued/https://releaseradar.jp/en/updates/line/ce8de44b6841/https://releaseradar.jp/en/updates/line/ce8de44b6841/Tue, 15 Sep 2026 15:00:00 GMTNoticeA network outage that caused 5xx status code errors across Messaging API endpoints has been fully resolved. ・Some requests failed to process normally between approximately 23:58 on September 15 and 03:43 on September 16, 2026 (UTC+9) ・All Messaging API endpoints and corporate LINE Notification Message sending endpoints were affected ・Some APIs support safe request retries without duplicate processing by specifying X-Line-Retry-Key https://developers.line.biz/ja/news/2026/09/16/messaging-api-outage/https://releaseradar.jp/en/updates/line/707b90e84176/https://releaseradar.jp/en/updates/line/707b90e84176/Sun, 16 Aug 2026 15:00:00 GMTNoticeLINE Developers issued a reminder to specify exact documented endpoints without trailing slashes when sending requests to the Messaging API. ・https://api.line.me/v2/bot/message/push is given as a valid example, whereas appending an unnecessary trailing slash to the path is invalid ・Implementing with an official Messaging API SDK allows requests to use the valid endpoint without manually managing URLs or paths https://developers.line.biz/ja/news/2026/08/17/alert-about-specifying-endpoints-when-sending-requests/https://releaseradar.jp/en/updates/line/9f793fafde94/https://releaseradar.jp/en/updates/line/9f793fafde94/Tue, 11 Aug 2026 15:00:00 GMTNewWhen a user edits a text message in a group chat that includes a LINE Official Account, the LINE Platform now sends a webhook event. ・When a user edits a sent text message in a group chat with a LINE Official Account, a messageEdited event is sent to the bot server specified in the Webhook URL of the LINE Developers Console. ・The edit event is sent only for group chats, and not for one-on-one chats or multi-person chats. ・The edit event includes a replyToken, allowing the LINE Official Account to reply to the edited message. https://developers.line.biz/ja/news/2026/08/12/messaging-api-edit-event/https://releaseradar.jp/en/updates/line/29cbc94f8786/https://releaseradar.jp/en/updates/line/29cbc94f8786/Mon, 03 Aug 2026 15:00:00 GMTNoticeA server outage in the Messaging API caused some requests to fail, and the service has now fully recovered. ・A server outage occurred on August 4, 2026 from around 16:11 to around 16:41 (UTC+9). ・The outage affected getting profile information and marking messages from users as read (corporate option). ・Some requests could not be processed normally and returned 500-series status code errors. https://developers.line.biz/ja/news/2026/08/04/messaging-api-outage/https://releaseradar.jp/en/updates/line/af47a89cb07a/https://releaseradar.jp/en/updates/line/af47a89cb07a/Mon, 27 Jul 2026 15:00:00 GMTNoticeA server outage that caused errors and delays across multiple LINE Platform services has been fully resolved. ・A server outage occurred on July 28, 2026 from around 16:46 to 21:11 UTC+9 ・Messaging API and LINE Notification Messages experienced Webhook delivery delays or failures and 5xx errors ・Adding friends and unblocking occasionally failed in LINE Login, LIFF, and LINE MINI App ・Service message delivery was occasionally delayed or failed in LIFF and LINE MINI App ・Channel settings could occasionally not be changed in the LINE Developers Console https://developers.line.biz/ja/news/2026/07/28/messaging-api-outage/https://releaseradar.jp/en/updates/line/84454e0fc4d0/https://releaseradar.jp/en/updates/line/84454e0fc4d0/Tue, 30 Jun 2026 15:00:00 GMTNewStatistics such as impression and click counts can now be retrieved via the API for rich menus created with the Messaging API. ・Added an endpoint to get total statistics for rich menus. ・Added an endpoint to get daily statistics for rich menus. ・Statistics for rich menus created with the Messaging API are not displayed in LINE Official Account Manager. ・Statistics for rich menus created in LINE Official Account Manager cannot be retrieved via the Messaging API. https://developers.line.biz/ja/news/2026/07/01/rich-menu-insight/https://releaseradar.jp/en/updates/line/47366a08e831/https://releaseradar.jp/en/updates/line/47366a08e831/Mon, 25 May 2026 15:00:00 GMTBreakingOn May 26, 2026, the rate limit for the Messaging API endpoint to retrieve the list of rich menus was reduced. ・The rate limit for the target endpoint changed from 2,000 requests/second to 10 requests/second ・Rate limits for all other endpoints remain unchanged https://developers.line.biz/ja/news/2026/05/26/messaging-api-rate-limit/https://releaseradar.jp/en/updates/line/92aa1065f579/https://releaseradar.jp/en/updates/line/92aa1065f579/Wed, 06 May 2026 15:00:00 GMTBreakingThe rate limit for the Messaging API endpoint that gets rich menu lists is scheduled to change on May 26, 2026. ・The rate limit for "Get rich menu list" changes from 2,000 requests per second to 10 requests per second. ・Rate limits for endpoints other than the above do not change. ・The contents and date of the change may change without notice. https://developers.line.biz/ja/news/2026/05/07/messaging-api-rate-limit/https://releaseradar.jp/en/updates/line/482da40c73a8/https://releaseradar.jp/en/updates/line/482da40c73a8/Thu, 16 Apr 2026 15:00:00 GMTNoticeMessaging API rich menu endpoints are now available and operating normally again. ・A server failure occurred from around 11:37 to 11:40 on April 17, 2026 (UTC+9). ・Endpoints in the rich menu, user-specific rich menu, and rich menu alias sections were affected. ・Some requests could not be processed normally and resulted in status code 500-level errors. https://developers.line.biz/ja/news/2026/04/17/messaging-api-outage/https://releaseradar.jp/en/updates/line/24d72d8b36a7/https://releaseradar.jp/en/updates/line/24d72d8b36a7/Tue, 03 Feb 2026 15:00:00 GMTNoticeAn issue where some content retrieval requests in the Messaging API failed has been resolved. ・The issue occurred between around 14:13 and 15:44 on February 3, 2026 (UTC+9). ・The cause was a server failure. ・The affected scope was Get content ("コンテンツを取得する"). ・Status code 400 errors occurred for some requests. https://developers.line.biz/ja/news/2026/02/04/messaging-api-outage/https://releaseradar.jp/en/updates/line/c65636e4aab4/https://releaseradar.jp/en/updates/line/c65636e4aab4/Tue, 20 Jan 2026 15:00:00 GMTNewYou can now retrieve information for web traffic audiences created with measurement tags through the Messaging API. ・Web traffic audiences using measurement tags can be created from LINE Official Account Manager ・Using measurement tags requires a verified or premium account in Japan connected to a verified Business Manager organization ・Measurement tags cannot be used in LINE Ads, where only LINE Tag remains available ・LINE Tag is scheduled to be discontinued in the future https://developers.line.biz/ja/news/2026/01/21/tracking-tag/