{
  "protocol_version": "commerce/1.0",
  "reference": "hold_CC-1043",
  "error": {
    "code": "insufficient_stock",
    "message": "Sin stock suficiente para una o más líneas.",
    "fields": [],
    "lines": [
      {
        "sku": "REF-1042-NEG-38",
        "requested": 2,
        "available": 0
      }
    ]
  }
}