{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/BillV20250623",
  "title": "Bill (ver 2025-06-23)",
  "required": [
    "AccountId",
    "AccountType",
    "AssociatedAccountIds",
    "CorrectionState",
    "CreatedUtc",
    "EnterpriseId",
    "Id",
    "State",
    "Type",
    "UpdatedUtc"
  ],
  "type": "object",
  "properties": {
    "Id": {
      "type": "string",
      "description": "Unique identifier of the bill.",
      "format": "uuid"
    },
    "Name": {
      "type": "string",
      "description": "Name of the bill.",
      "nullable": true
    },
    "EnterpriseId": {
      "type": "string",
      "description": "Unique identifier of the `Enterprise`.",
      "format": "uuid"
    },
    "AccountId": {
      "type": "string",
      "description": "Unique identifier of the account (`Customer` or `Company`) the bill is issued to.",
      "format": "uuid"
    },
    "AccountType": {
      "title": "Account type",
      "allOf": [
        {
          "$ref": "#/components/schemas/AccountTypeEnum"
        }
      ],
      "description": "A discriminator specifying the account type, i.e. `Customer` or `Company`.\n\nCompany\n\nCustomer",
      "x-enumNames": [
        "Company",
        "Customer"
      ],
      "x-enumDescriptions": [
        "",
        ""
      ]
    },
    "AssociatedAccountIds": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uuid"
      },
      "description": "Unique identifiers of the `Customers` or `Companies` that are associated to the bill.",
      "nullable": true
    },
    "CounterId": {
      "type": "string",
      "description": "Unique identifier of the bill `Counter`.",
      "format": "uuid",
      "nullable": true
    },
    "State": {
      "$ref": "#/components/schemas/BillState"
    },
    "Type": {
      "$ref": "#/components/schemas/BillType"
    },
    "Number": {
      "type": "string",
      "description": "Number of the bill.",
      "nullable": true
    },
    "VariableSymbol": {
      "type": "string",
      "description": "Variable symbol of the bill.",
      "nullable": true
    },
    "CreatedUtc": {
      "minLength": 1,
      "type": "string",
      "description": "Date and time of the bill creation in UTC timezone in ISO 8601 format.",
      "format": "date-time"
    },
    "UpdatedUtc": {
      "minLength": 1,
      "type": "string",
      "description": "Date and time when the bill was last updated, in UTC timezone in ISO 8601 format.",
      "format": "date-time"
    },
    "IssuedUtc": {
      "type": "string",
      "description": "Date and time of the bill issuance in UTC timezone in ISO 8601 format.",
      "format": "date-time",
      "nullable": true
    },
    "TaxedUtc": {
      "type": "string",
      "description": "Taxation date of the bill in UTC timezone in ISO 8601 format.",
      "format": "date-time",
      "nullable": true
    },
    "PaidUtc": {
      "type": "string",
      "description": "Date when the bill was paid in UTC timezone in ISO 8601 format.",
      "format": "date-time",
      "nullable": true
    },
    "DueUtc": {
      "type": "string",
      "description": "Bill due date and time in UTC timezone in ISO 8601 format.",
      "format": "date-time",
      "nullable": true
    },
    "LastReminderDateUtc": {
      "type": "string",
      "description": "Date and time when an email reminder to pay an invoice was last sent, in UTC timezone in ISO 8601 format.",
      "format": "date-time",
      "nullable": true
    },
    "PurchaseOrderNumber": {
      "type": "string",
      "description": "Unique number of the purchase order from the buyer.",
      "nullable": true
    },
    "Notes": {
      "type": "string",
      "description": "Additional notes.",
      "nullable": true
    },
    "Options": {
      "title": "Bill options",
      "allOf": [
        {
          "$ref": "#/components/schemas/BillOptions"
        }
      ],
      "description": "Options of the bill.",
      "nullable": true
    },
    "Owner": {
      "title": "Bill owner data",
      "allOf": [
        {
          "$ref": "#/components/schemas/BillAccountData"
        }
      ],
      "description": "Additional information about owner of the bill. Can be a `Customer` or `Company`. Persisted at the time of closing of the bill.",
      "nullable": true
    },
    "AssociatedAccountsData": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/BillAccountData"
      },
      "description": "Additional information about the associated account of the bill. Can be a `Customer` or `Company`. Persisted at the time of closing of the bill. Currently only one account can be associated with a bill, but this may be extended in future.",
      "nullable": true
    },
    "EnterpriseData": {
      "title": "Bill enterprise data",
      "allOf": [
        {
          "$ref": "#/components/schemas/BillEnterpriseData"
        }
      ],
      "description": "Additional information about the enterprise issuing the bill, including bank account details. Persisted at the time of closing of the bill.",
      "nullable": true
    },
    "CorrectionState": {
      "title": "Bill correction state",
      "allOf": [
        {
          "$ref": "#/components/schemas/BillCorrectionStateEnum"
        }
      ],
      "description": "Whether the bill is a regular bill or a corrective bill.\n\nBill (Regular bill.)\n\nCorrectiveBill (Corrective bill, i.e. the `CorrectionType` is either `Edit`, `Cancellation`, or `ReceivablePaymentsBalance`.)",
      "x-enumNames": [
        "Bill",
        "CorrectiveBill"
      ],
      "x-enumDescriptions": [
        "Regular bill.",
        "Corrective bill, i.e. the `CorrectionType` is either `Edit`, `Cancellation`, or `ReceivablePaymentsBalance`."
      ]
    },
    "CorrectionType": {
      "allOf": [
        {
          "$ref": "#/components/schemas/BillCorrectionTypeEnum"
        }
      ],
      "description": "Type of correction.\n\nCancellation\n\nEdit\n\nCreditNote\n\nReinstatement\n\nReceivablePaymentsBalance",
      "nullable": true
    },
    "CorrectedBillId": {
      "type": "string",
      "description": "The ID of the bill that the corrective bill corrects. If the corrected bill was deleted, this field is `null`.",
      "format": "uuid",
      "nullable": true
    }
  },
  "additionalProperties": false,
  "x-schema-id": "BillV20250623"
}