Code that reads page.archived or passes after to append breaks after opting into Notion-Version 2026-03-11

Symptom

page.archived is undefined on every pageAppend block children calls that pass after stop workingBlocks of type transcription no longer appear; they come back as meeting_notes

Cause

Version 2026-03-11 renamed archived to in_trash in requests and responses, replaced the after parameter with a position object, and renamed the transcription block type to meeting_notes.

Fix

Update field names and block type checks before switching versions. In the JS SDK, upgrade to 5.12.0 or later and set notionVersion explicitly.

ApplyCopy

await notion.blocks.children.append({ block_id: pageId, children, position: { type: "after_block", after_block: { id: anchorBlockId } }, }); await notion.pages.update({ page_id, in_trash: true });

Affected

Notion-Version 2026-03-11; @notionhq/client 5.12.0 and later when notionVersion is set to it

Sources

• https://developers.notion.com/guides/get-started/upgrade-guide-2026-03-11
• https://developers.notion.com/reference/versioning
• https://developers.notion.com/reference/patch-block-children

Last verified 2026-10-15 · Confirmed by 0 builders