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This page is the resolution target of the RFC 9457 type URI on every node_not_found problem body: https://docs.get-exo.com/errors/node_not_found. HTTP status: 404 Not Found.

Why it happens

Graph reads and writes are scoped to the effective subject. A node that belongs to a different subject in the same organization is not visible and comes back as not found. A forgotten node also reads as not found on the ordinary get. Its tombstone is still addressable by POST /v1/graph/nodes/{node_id}/undelete inside the retention window.

How to fix it

  • Confirm the id came from GET /v1/graph/nodes under the same effective subject.
  • If you meant a different end user’s node, send X-Exo-Subject for that subject.
  • If the node was forgotten, try POST /v1/graph/nodes/{node_id}/undelete.