Even with a connected database and correct bearer token, the Notion API still returns a 404 error. What configuration might be incorrect?
In my experience, the 404 error from the Notion API can often be traced back to access permissions rather than a misconfiguration of the token itself. I encountered a similar issue where the integration wasn’t added to the relevant pages or databases in Notion. Even though the bearer token was correct, the application never had the necessary access to read the targeted object. Verifying that the integration has been explicitly granted permission typically resolves this problem, making sure all objects are shared with it accordingly.
It is possible that the 404 error arises from incorrect endpoint usage rather than solely permission issues. In my experience, ensuring that the correct object identifier is employed is essential. A common pitfall is mixing up the page and database IDs or mistakenly referencing the wrong endpoint URL. I have seen cases where a small typo in the endpoint or using an outdated version of the API documentation led to device miscommunication. Verifying the URL, double-checking any changes in the API version, and validating the object ID against the documentation often resolve the issue.