404 Not Found
The resource does not exist.
Machine code: not_found
Either the id is unknown, or the resource belongs to a provider outside your key's scope — which is reported as 404 rather than 403 so the API does not disclose that it exists.
How to resolve
Verify the id, and that the resource belongs to a provider your key can access.
Response shape
Every error is an RFC 9457 application/problem+json document with a machine
code and a trace_id you can quote to support.
{
"type": "https://docs.openiris.io/errors/404",
"title": "Not Found",
"status": 404,
"code": "not_found",
"detail": "No resource with id 99999.",
"instance": "/v1/resources/99999",
"trace_id": "0HMVABCDEF123"
}