{"id":179902,"date":"2026-01-07T17:26:59","date_gmt":"2026-01-07T08:26:59","guid":{"rendered":"https:\/\/support.questetra.com\/developer-blog\/trouble-20251229\/"},"modified":"2026-01-07T18:41:54","modified_gmt":"2026-01-07T09:41:54","slug":"trouble-20251229","status":"publish","type":"post","link":"https:\/\/support.questetra.com\/en\/incident\/trouble-20251229\/","title":{"rendered":"2025-12-28 16:11\uff08UTC\uff09[Message Start Event (HTTP)] Access Issue (Resolved)"},"content":{"rendered":"\n<p class=\"is-style-info wp-block-paragraph\">This problem has been recovered already.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A service disruption incident of the following details occurred.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Incident Date<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Occurred: 2025-12-28 16:11 [UTC]<\/li>\n\n\n\n<li>Recovered: 2026-01-05 15:37 [UTC] \uff087 days 23 hours 6 minutes period\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What Occurred<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When sending a request in multipart\/form-data format to the [Message Start Event (HTTP)], if the number of parts in the request exceeds 50, the request will not be accepted and a 500 error be returned. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Note: The number of parts is roughly corresponds to the number of request parameters, but it also includes the number of files sent for file-type data items and the number of selected options for Select-type (Checkbox) Data Items.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cause of Trouble<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We applied patch version updates to our application servers, which primarily included bug fixes and security patches, along with upgrades to versions 17.1.3 and 17.2.0. This patch introduced a restriction on the number of parts that could be included in multipart requests as a countermeasure against DoS attacks. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, because we did not explicitly set an upper limit during the version upgrade, the default value of 50 was applied. As a result, multipart requests for [Message Start Event (HTTP)] with more than 50 parts resulted in errors.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reaction<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We performed system maintenance to increase the maximum number of parts allowed for multipart requests. While the exact limit is not disclosed, it is not unlimited and is sufficient for normal usage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trouble Date: 2025-12-28 16:11 &#8211; 15:37 (7 days 23 hours 6 minutes\uff09<\/p>\n","protected":false},"author":25,"featured_media":103093,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_uag_custom_page_level_css":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[4680],"tags":[],"class_list":["post-179902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-incident"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1","uagb_featured_image_src":{"full":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1",1200,675,false],"thumbnail":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=440%2C440&ssl=1",440,440,true],"medium":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=560%2C315&ssl=1",560,315,true],"medium_large":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=768%2C432&ssl=1",768,432,true],"large":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1024%2C576&ssl=1",1024,576,true],"1536x1536":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1",1200,675,true],"2048x2048":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1",1200,675,true],"newspack-article-block-landscape-large":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=1200%2C675&ssl=1",1200,675,true],"newspack-article-block-portrait-large":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=900%2C675&ssl=1",900,675,true],"newspack-article-block-square-large":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=1200%2C675&ssl=1",1200,675,true],"newspack-article-block-landscape-medium":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=800%2C600&ssl=1",800,600,true],"newspack-article-block-portrait-medium":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=600%2C675&ssl=1",600,675,true],"newspack-article-block-square-medium":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=800%2C675&ssl=1",800,675,true],"newspack-article-block-landscape-intermediate":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=600%2C450&ssl=1",600,450,true],"newspack-article-block-portrait-intermediate":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=450%2C600&ssl=1",450,600,true],"newspack-article-block-square-intermediate":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=600%2C600&ssl=1",600,600,true],"newspack-article-block-landscape-small":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=400%2C300&ssl=1",400,300,true],"newspack-article-block-portrait-small":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=300%2C400&ssl=1",300,400,true],"newspack-article-block-square-small":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=400%2C400&ssl=1",400,400,true],"newspack-article-block-landscape-tiny":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=200%2C150&ssl=1",200,150,true],"newspack-article-block-portrait-tiny":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=150%2C200&ssl=1",150,200,true],"newspack-article-block-square-tiny":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?resize=200%2C200&ssl=1",200,200,true],"newspack-article-block-uncropped":["https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1",1200,675,true]},"uagb_author_info":{"display_name":"Tomoatsu Horibe","author_link":"https:\/\/support.questetra.com\/en\/author\/horibequestetra\/"},"uagb_comment_info":0,"uagb_excerpt":"Trouble Date: 2025-12-28 16:11 - 15:37 (7 days 23 hours 6 minutes\uff09","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9DiIh-KNE","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":77261,"url":"https:\/\/support.questetra.com\/en\/incident\/trouble-20190624\/","url_meta":{"origin":179902,"position":0},"title":"2019-06-24 around 07:30 (UTC) Lowered Performance of Process Start by Email on Part of Business\/Starter Plan","author":"Hirotaka NISHI","date":"2019-06-25","format":false,"excerpt":"Trouble Date: 2019-06-24 around 07:30 - 08:30 [UTC] (1h)","rel":"","context":"In &quot;Incident Info&quot;","block_context":{"text":"Incident Info","link":"https:\/\/support.questetra.com\/en\/category\/incident\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":68714,"url":"https:\/\/support.questetra.com\/en\/incident\/trouble-20180413\/","url_meta":{"origin":179902,"position":1},"title":"Apr. 13 (UTC+9) Access Trouble Occurred on Part of User Environment (U.S. server) (Recovered)","author":"Hirotaka NISHI","date":"2018-04-17","format":false,"excerpt":"Some of the customers of 'Questetra BPM Suite SaaS Edition' could not login the service during the period of between 11:09 and 16:24 on 13th of April, for occurrence of access trouble. We deeply apologize to the customers for your inconvenience. Trouble Date Occurred: 2018-04-13 11:09 [UTC +9:00] 2018-04-13 02:09\u2026","rel":"","context":"In &quot;Incident Info&quot;","block_context":{"text":"Incident Info","link":"https:\/\/support.questetra.com\/en\/category\/incident\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":67683,"url":"https:\/\/support.questetra.com\/en\/incident\/trouble-20171231\/","url_meta":{"origin":179902,"position":2},"title":"Dec. 31 (UTC+9) Access Trouble Occurred on Part of User Environment (on Server base in Germany) (Recovered)","author":"Hirotaka NISHI","date":"2018-01-04","format":false,"excerpt":"Some of the customers of \u2018Questetra BPM Suite SaaS Edition\u2019 could not login the service during the period of between 11:20 and 11:49 on December 31st, 2017 (UTC+9:00), for occurrence of access trouble. We deeply apologize to the customers for your inconvenience. Trouble Date Occurred: 2017-12-31 11:20 [UTC +9:00] 2017-12-31\u2026","rel":"","context":"In &quot;Incident Info&quot;","block_context":{"text":"Incident Info","link":"https:\/\/support.questetra.com\/en\/category\/incident\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":98977,"url":"https:\/\/support.questetra.com\/en\/incident\/trouble-20201222\/","url_meta":{"origin":179902,"position":3},"title":"2020-12-22 02:35 (UTC) Access Trouble Occurred on Part of Starter Plan (Recovered)","author":"Hirotaka NISHI","date":"2020-12-22","format":false,"excerpt":"Trouble Date: 2020-12-22 02:35 \u2013 03:43 [UTC] (68 minutes)","rel":"","context":"In &quot;Incident Info&quot;","block_context":{"text":"Incident Info","link":"https:\/\/support.questetra.com\/en\/category\/incident\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/support.questetra.com\/wp-content\/uploads\/2021\/02\/outage-fi-en-1200x675-1.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":67084,"url":"https:\/\/support.questetra.com\/en\/incident\/trouble-20180326\/","url_meta":{"origin":179902,"position":4},"title":"Mar.26 (UTC+9) Access Trouble Occurred on Part of User Environment of Free SaaS (Recovered)","author":"Hirotaka NISHI","date":"2018-03-26","format":false,"excerpt":"Some of the customers of \u2018Questetra BPM Suite SaaS Edition\u2019 could not login the service during the period of between 00:47 and 03:06 on March 26th, 2018 (UTC+9:00), for the occurrence of access trouble. We deeply apologize to the customers for your inconvenience. 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