INTENT_ALREADY_EXECUTED

That nonce has already executed on chain.

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 transaction you are trying to relay, or another one with the same nonce, is final.

What to do

Read intent.txHash and treat the work as done. Do not sign again.

Extra members

This code carries intent.txHash in the problem document, on top of the common members.

The problem document

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

{
  "type": "https://docs.co-relayer.com/errors/intent-already-executed",
  "title": "That nonce has already executed on chain.",
  "status": 409,
  "detail": "A sentence about this specific occurrence.",
  "instance": "req_01JB…",
  "code": "INTENT_ALREADY_EXECUTED",
  "retryable": false,
  "resign": "NONE",
  "hint": "Read `intent.txHash` and treat the work as done. Do not sign again."
}

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