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Make Notion invalid_request_url: fix the empty page ID after Gmail and Search Objects

#make #notion #automation #nocode

Short answer: Notion's API returns invalid_request_url when the page URL ends at /v1/pages/ with no page ID. In Make that usually means Gmail → Notion Search Objects looked successful (green ✓1) but the output bundle had an empty ID, and HTTP › Make a request built https://api.notion.com/v1/pages/{{empty}}. Fix the search (and prefer Notion's own Update modules over a bare HTTP PATCH).

Everything here works on Make's Free plan.

Green ✓1 is not "one match found"

Community answers in that thread stress: a green check with 1 means the module ran once and returned a bundle, not that a Notion page was found. Open the output bubble. If the ID / page fields are empty, the next HTTP URL will be invalid even though Search Objects did not throw.

Treat "module success" and "business match found" as two different checks. Add a filter after Search Objects: Page ID (or equivalent) Exists before any update module runs.

Fix the Notion search first

  1. Confirm the CRM page or data source is shared with your Make Notion connection (Notion → Add connections for internal integrations; reauthorize public connections after sharing new pages). Make's Notion app docs require sharing databases for them to appear.
  2. Prefer current Data Source modules over Legacy database-item modules. Make documents that from 3 September 2025 Notion API 2025-09-03 uses data_source_id for new modules; Legacy modules still use database_id.
  3. Match the property type in the Search Objects filter. Thread replies note email properties need an email-style filter, not a plain text equals against a mismatched type.
  4. Normalize addresses the same way on both sides (trim, consistent case) before comparing.
  5. Inspect the Search Objects output bundle for the page/data-source item ID you will map.

Prefer Notion Update modules over raw HTTP

Make's Notion app includes Update a Data Source Item, Update a Page, and Make an API Call. Community staff advised using Notion modules (with the existing connection) instead of a generic HTTP module with no Notion auth. That avoids hand-built URLs and missing Notion-Version headers.

If you must use HTTP › Make a request:

  • Method PATCH, URL https://api.notion.com/v1/pages/<page_id> only when page_id is non-empty (Notion Update page).
  • Send Notion's required headers (authorization and Notion-Version) as documented by Notion.
  • Never map a possibly empty ID into the path; filter first.

Safe Gmail → mark Replied pattern

  1. Gmail › Watch emails (or a label watch).
  2. Notion › Search Objects / search data source items by email.
  3. Filter: ID Exists (and optionally status is not already Replied).
  4. Notion › Update a Data Source Item (or Update a Page): set Status / Last contacted.
  5. Optional: log the Message ID in Sheets so repeats do not re-process (see free quote-reply-signal-free for a Gmail-reply → Sheets pattern).

For temporary Notion or HTTP failures after a valid ID exists, attach Retry (formerly Break) and enable incomplete executions, not for empty-ID URL errors, which will not heal by repeating.

Sources checked (14 October 2026)

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FAQ

What does invalid_request_url mean in Notion?

Notion's status codes list 400 invalid_request_url when the request URL is not valid, for example /v1/pages/ with no page ID.

Why does Search Objects show green if nothing was found?

A green check with 1 means the module ran and returned a bundle. Open the output: the ID can still be empty.

Should I use HTTP or Notion modules to update a page?

Prefer Notion's Update a Data Source Item or Update a Page with your Make connection. Use HTTP only with a filtered, non-empty page ID and Notion's required headers.

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