NOT_FOUND

No such resource.

HTTP status	404
Group	Platform
Retryable	No — sending it again changes nothing

What happened

The id, hash or address is unknown to this host — or belongs to another network.

What to do

Check the identifier and the host you are calling.

The problem document

Every error is application/problem+json (RFC 9457) with the same shape:

{
  "type": "https://docs.co-relayer.com/errors/not-found",
  "title": "No such resource.",
  "status": 404,
  "detail": "A sentence about this specific occurrence.",
  "instance": "req_01JB…",
  "code": "NOT_FOUND",
  "retryable": false,
  "hint": "Check the identifier and the host you are calling."
}

See the error model for what each member means and how to handle unknown codes.