vaki_not_found

HTTP 404 · No cause exists with that key.

What causes it

The `vaki` key you sent does not resolve to a cause. On `POST /v1/checkout_links` this surfaces as a `422` rather than a `404`, because the request itself was well-formed — it just could not be applied.

What to do

Usually a stale mapping on your side. The vaki key is the slug in the cause’s public URL: `vaki.co/clinicalaliga` is the key `clinicalaliga`. Store it when you create the cause rather than deriving it from a title.

Retry?

No — the same request produces the same answer.

The response

{
  "type": "https://developers.vaki.co/errors/vaki_not_found",
  "title": "…",
  "status": 404,
  "code": "vaki_not_found",
  "detail": "…",
  "instance": "/v1/checkout_links"
}

Branch on code, never on title or detail. The full list of codes, and the shape of the problem document, is on Errors.