invalid_fx_source

fx_source is not one of card_rate, sii_observado, custom.

What to do

Whatever you send is stored verbatim on the expense and the document.

The envelope

{
  "error": {
    "type": "invalid_request_error",
    "code": "invalid_fx_source",
    "message": "…",
    "hint": "Whatever you send is stored verbatim on the expense and the document.",
    "retriable": false,
    "doc_url": "https://docs.facturia.cl/errors/invalid_fx_source",
    "request_id": "req_01K2R7Q9M4T2VB"
  }
}

Program against code, never against message — the prose can be rewritten, the code cannot (§5.8).

hint and retriable arrive in the response with these exact values: they are a function of code and come from the same dictionary GET /v1/error_codes serves, so the envelope and the dictionary cannot disagree. Both are English on the wire by design — one registry, one language. More in The error envelope.

See also

The machine-readable copy of this page lives at GET /v1/error_codes, unauthenticated.