{
  "$defs": {
    "LineItem": {
      "properties": {
        "description": {
          "title": "Description",
          "type": "string"
        },
        "quantity": {
          "anyOf": [
            {
              "type": "number"
            },
            {
              "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
              "type": "string"
            }
          ],
          "title": "Quantity"
        },
        "unit_price": {
          "anyOf": [
            {
              "type": "number"
            },
            {
              "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
              "type": "string"
            }
          ],
          "title": "Unit Price"
        },
        "unit": {
          "default": "",
          "title": "Unit",
          "type": "string"
        }
      },
      "required": [
        "description",
        "quantity",
        "unit_price"
      ],
      "title": "LineItem",
      "type": "object"
    },
    "Party": {
      "properties": {
        "name": {
          "title": "Name",
          "type": "string"
        },
        "address": {
          "items": {
            "type": "string"
          },
          "minItems": 1,
          "title": "Address",
          "type": "array"
        },
        "country": {
          "default": "CH",
          "title": "Country",
          "type": "string"
        },
        "vat_id": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "title": "Vat Id"
        }
      },
      "required": [
        "name",
        "address"
      ],
      "title": "Party",
      "type": "object"
    },
    "VatBlock": {
      "properties": {
        "rate": {
          "anyOf": [
            {
              "type": "number"
            },
            {
              "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
              "type": "string"
            }
          ],
          "default": "8.1",
          "title": "Rate"
        }
      },
      "title": "VatBlock",
      "type": "object"
    }
  },
  "properties": {
    "number": {
      "title": "Number",
      "type": "string"
    },
    "kind": {
      "enum": [
        "domestic",
        "export"
      ],
      "title": "Kind",
      "type": "string"
    },
    "currency": {
      "pattern": "^[A-Z]{3}$",
      "title": "Currency",
      "type": "string"
    },
    "issue_date": {
      "format": "date",
      "title": "Issue Date",
      "type": "string"
    },
    "customer": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "$ref": "#/$defs/Party"
        }
      ],
      "title": "Customer"
    },
    "items": {
      "items": {
        "$ref": "#/$defs/LineItem"
      },
      "minItems": 1,
      "title": "Items",
      "type": "array"
    },
    "supply": {
      "default": "",
      "title": "Supply",
      "type": "string"
    },
    "locale": {
      "default": "de_CH",
      "title": "Locale",
      "type": "string"
    },
    "vat": {
      "$ref": "#/$defs/VatBlock"
    },
    "reference": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Reference"
    },
    "notes": {
      "items": {
        "type": "string"
      },
      "title": "Notes",
      "type": "array"
    },
    "round_5": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Round 5"
    },
    "terms_days": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": 30,
      "title": "Terms Days"
    },
    "reverse_charge": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Reverse Charge"
    }
  },
  "required": [
    "number",
    "kind",
    "currency",
    "issue_date",
    "customer",
    "items"
  ],
  "title": "Invoice",
  "type": "object"
}