{"id":215959,"date":"2025-09-24T09:58:27","date_gmt":"2025-09-24T08:58:27","guid":{"rendered":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/?page_id=215959"},"modified":"2025-09-24T10:01:25","modified_gmt":"2025-09-24T09:01:25","slug":"industry-standing-data-isd-circulars","status":"publish","type":"page","link":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/data\/industry-standing-data-isd\/industry-standing-data-isd-circulars\/","title":{"rendered":"Industry Standing Data (ISD) Circulars"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":353,"featured_media":0,"parent":215956,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"footnotes":""},"tags":[],"class_list":["post-215959","page","type-page","status-publish","hentry"],"acf":[],"semantic_search":{"post_id":215959,"title":"Industry Standing Data (ISD) Circulars","link":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/data\/industry-standing-data-isd\/industry-standing-data-isd-circulars\/","categories":[],"tags":[],"content":"    <div class=\"panel-content\">\n        <p>Industry Standing Data (ISD) Circulars are formal notices sent out to Market Participants as part of the process of changing, publishing, or implementing ISD.<\/p>\n\n    <\/div>\n\n\n<div class=\"pagebuilder-blocks\"><div class=\"panel-content\">\n    <h2 id=\"types-of-circulars\">Types of Circulars<\/h2>\n<p>There are two types of Circulars issued as part of the ISD Release process:<\/p>\n<ul>\n<li><strong>Impact Assessment Circular:<\/strong>&#xA0;informs you of the proposed general changes to be included in the next Version of ISD.&#xA0;You are expected to carry out an impact assessment on these changes.&#xA0;<strong>Please note:<\/strong>&#xA0;An Impact Assessment Circular is&#xA0;not issued&#xA0;when the release is limited to publishing an ISD catalogue to include newly qualified MHHS participants only.<\/li>\n<li><strong>Final Circular:&#xA0;<\/strong>confirms the approved changes being made to the next Version of ISD. Once issued, changes cannot be excluded from that Version.<\/li>\n<\/ul>\n<h2 id=\"how-to-respond-to-isd-circulars\">How to respond to ISD Circulars<\/h2>\n<ul>\n<li data-start=\"1506\" data-end=\"1577\">\n<p data-start=\"1508\" data-end=\"1577\"><strong data-start=\"1508\" data-end=\"1541\">Impact Assessment Circulars:&#xA0;<\/strong>check for impacts, give feedback.<\/p>\n<\/li>\n<li data-start=\"1578\" data-end=\"1680\">\n<p data-start=\"1580\" data-end=\"1680\"><strong data-start=\"1580\" data-end=\"1601\">Final Circulars:&#xA0;<\/strong>implement the confirmed changes into your systems before the effective date.<\/p>\n<\/li>\n<\/ul>\n<p>&#xA0;<\/p>\n<h2 id=\"latest-isd-circulars\">Latest ISD Circulars<\/h2>\n\n<\/div><div class=\"panel-content\"><h2 id=\"isd00005-market-participant-impact-assessment-v14\">ISD00005 - Market Participant Impact Assessment - v14<\/h2><div class=\"documents-group\">\t\t\t\t\t<a href=\"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/documents\/data\/market-domain-data-data\/mdd-circulars\/mdd-701-750\/mdd00716-circular-v304\/\" target=\"_blank\" class=\"item item-document icon-filetype-pdf\">\n\t\t\t\t\t\t<div class=\"item-content\">\n\t\t\t\t\t\t\t<p class=\"item-title\">ISD00005 - Market Participant Impact Assessment - v14<\/p>\n\n\t\t\t\t\t\t\t<div class=\"post-meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"file_size\"><strong>Size<\/strong> <\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<i class=\"item-link icon-right-arrow\">Download<\/i>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/documents\/data\/market-domain-data-data\/mdd-circulars\/mdd-701-750\/mdd00716a-change-requests\/\" target=\"_blank\" class=\"item item-document icon-filetype-zip\">\n\t\t\t\t\t\t<div class=\"item-content\">\n\t\t\t\t\t\t\t<p class=\"item-title\">ISD00005 - General Change Requests for v14<\/p>\n\n\t\t\t\t\t\t\t<div class=\"post-meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"file_size\"><strong>Size<\/strong> <\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<i class=\"item-link icon-right-arrow\">Download<\/i>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div><\/div><div class=\"panel-content\"><h2 id=\"isd00002-%e2%80%93-industry-standard-data-changes\">ISD00002 \u2013 Industry Standard Data changes<\/h2><div class=\"documents-group\">\t\t\t\t\t<a href=\"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/documents\/data\/market-domain-data-data\/supplier-deemed-take-groups-v307\/\" target=\"_blank\" class=\"item item-document icon-filetype-xlsx\">\n\t\t\t\t\t\t<div class=\"item-content\">\n\t\t\t\t\t\t\t<p class=\"item-title\">ISD00002 \u2013 ISD v12 Publication notice v1.1<\/p>\n\n\t\t\t\t\t\t\t<div class=\"post-meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"file_size\"><strong>Size<\/strong> <\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<i class=\"item-link icon-right-arrow\">Download<\/i>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div><\/div><div class=\"panel-content\"><h2 id=\"isd00001-%e2%80%93-final-circular-v12\">ISD00001 \u2013 Final Circular v12<\/h2><div class=\"documents-group\">\t\t\t\t\t<a href=\"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/documents\/p436-draft-authority-led-scr-modification-report-v1-0\/\" target=\"_blank\" class=\"item item-document icon-filetype-zip\">\n\t\t\t\t\t\t<div class=\"item-content\">\n\t\t\t\t\t\t\t<p class=\"item-title\">ISD00001 \u2013 Final Circular v12<\/p>\n\n\t\t\t\t\t\t\t<div class=\"post-meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span><strong>Version<\/strong> 1<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span><strong>Document Date<\/strong> 07\/04\/2022<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"file_size\"><strong>Size<\/strong> <\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<i class=\"item-link icon-right-arrow\">Download<\/i>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/documents\/recruitment_exercise_attention_to_detail\/\" target=\"_blank\" class=\"item item-document icon-filetype-pdf\">\n\t\t\t\t\t\t<div class=\"item-content\">\n\t\t\t\t\t\t\t<p class=\"item-title\">ISD00002 \u2013 ISD v12 Publication notice v1.1<\/p>\n\n\t\t\t\t\t\t\t<div class=\"post-meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"file_size\"><strong>Size<\/strong> <\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<i class=\"item-link icon-right-arrow\">Download<\/i>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div><\/div><\/div>","s3_url":""},"_links":{"self":[{"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/pages\/215959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/users\/353"}],"replies":[{"embeddable":true,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/comments?post=215959"}],"version-history":[{"count":3,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/pages\/215959\/revisions"}],"predecessor-version":[{"id":215963,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/pages\/215959\/revisions\/215963"}],"up":[{"embeddable":true,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/pages\/215956"}],"wp:attachment":[{"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/media?parent=215959"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elexon-beta.elexonhostings.co.uk\/bsc\/wp-json\/wp\/v2\/tags?post=215959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}