GET: array(0) {
}
 POST: array(0) {
}
<h1>Mensaje a enviar</h1>object(RESTOperationMessage)#1 (13) {
  ["merchant":"RESTOperationMessage":private]=>
  string(9) "999008881"
  ["terminal":"RESTOperationMessage":private]=>
  string(2) "20"
  ["order":"RESTOperationMessage":private]=>
  string(12) "O6X6GSZX9C79"
  ["operID":"RESTOperationMessage":private]=>
  NULL
  ["transactionType":"RESTOperationMessage":private]=>
  string(1) "0"
  ["currency":"RESTOperationMessage":private]=>
  string(3) "978"
  ["amount":"RESTOperationMessage":private]=>
  string(4) "1234"
  ["dcc":"RESTOperationMessage":private]=>
  NULL
  ["parameters":"RESTOperationMessage":private]=>
  array(3) {
    ["DS_MERCHANT_IDENTIFIER"]=>
    string(40) "0197620cb6e8a4d74b5597ff9ed9b28671e52a37"
    ["DS_MERCHANT_PRODUCTDESCRIPTION"]=>
    string(45) "Prueba de pago con DirectPayment y referencia"
    ["DS_MERCHANT_DIRECTPAYMENT"]=>
    string(4) "true"
  }
  ["emv":"RESTOperationMessage":private]=>
  NULL
  ["cardNumber":"RESTOperationMessage":private]=>
  NULL
  ["cardExpiryDate":"RESTOperationMessage":private]=>
  NULL
  ["cvv2":"RESTOperationMessage":private]=>
  NULL
}
<h1>Respuesta recibida</h1>object(RESTResponseMessage)#20 (3) {
  ["result":"RESTResponseMessage":private]=>
  string(2) "KO"
  ["apiCode":"RESTResponseMessage":private]=>
  NULL
  ["operation":"RESTResponseMessage":private]=>
  NULL
}
<h1>Operation was not OK</h1>