TX_VERSION_UNSUPPORTED

The transaction version is not one CoRelayer relays.

HTTP status	400
Group	Relay path
Retryable	No — sending it again changes nothing
Re-sign	NONE — do not ask the user to sign anything

What happened

Accepted are version 1 with options: 0, and version 2 with the option bits listed in the relay docs.

What to do

Rebuild the transaction with a supported version and sign it again.

The problem document

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

{
  "type": "https://docs.co-relayer.com/errors/tx-version-unsupported",
  "title": "The transaction `version` is not one CoRelayer relays.",
  "status": 400,
  "detail": "A sentence about this specific occurrence.",
  "instance": "req_01JB…",
  "code": "TX_VERSION_UNSUPPORTED",
  "retryable": false,
  "resign": "NONE",
  "hint": "Rebuild the transaction with a supported version and sign it again."
}

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