NOTHING_TO_CANCEL

There is no in-flight intent to cancel.

HTTP status	409
Group	Relay path
Retryable	No — sending it again changes nothing
Re-sign	NONE — do not ask the user to sign anything

What happened

The intent is already terminal, or it never existed on this account.

What to do

Read the current state with the intent status endpoint before cancelling.

The problem document

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

{
  "type": "https://docs.co-relayer.com/errors/nothing-to-cancel",
  "title": "There is no in-flight intent to cancel.",
  "status": 409,
  "detail": "A sentence about this specific occurrence.",
  "instance": "req_01JB…",
  "code": "NOTHING_TO_CANCEL",
  "retryable": false,
  "resign": "NONE",
  "hint": "Read the current state with the intent status endpoint before cancelling."
}

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