HTTP/1.1 422 Unprocessable Entity Content-Type: application/hal+json; charset=utf-8 { "status": 422, "title": "Unprocessable Entity", "detail": "The payment method is invalid", "field": "method", "_links": { "documentation": { "href": "https://docs.mollie.com/guides/handling-errors", "type": "text/html" } } }