Implementing, sales, multiple item quantity, cash payment

The following JSON example shows a business case where multiple pieces of an item are entered and paid for by the customer in cash.

The example is based on the client included in the Fiscal Service Sample Client {c1062c55-57c4-4ed2-9c53-aff1762326a4} (select via drop down menu).

{
  "UniqueClientId": "c1062c55-57c4-4ed2-9c53-aff1762326a4",
  "AdditionalFields": {},
  "DocumentGuid": "7d91fbc7-ad32-4e6b-8ce0-dd61681f4305",
  "DocumentId": "20210416T1042054081023+0200",
  "CreateDate": "2021-04-16T10:42:05.4081023+02:00",
  "BookDate": "2021-04-16T10:42:05.4090974+02:00",
  "DocumentNumber": null,
  "CancellationDocument": false,
  "DocumentReference": null,
  "IsTraining": false,
  "DocumentType": 0,
  "DocumentTypeCaption": null,
  "User": {
    "Id": "123",
    "Caption": "TestUser"
  },
  "AllocationGroups": [],
  "Partner": null,
  "FiscalResponse": null,
  "FiscalDocumentNumber": 0,
  "FiscalDocumentRevision": 0,
  "Positions": [
    {
      "ItemCaption": "Rose",
      "ItemShortCaption": null,
      "Discounts": [],
      "Type": 0,
      "UseSubItemVatCalculation": true,
      "SubItems": null,
      "InHouse": false,
      "Quantity": 7.0,
      "QuantityUnit": null,
      "ItemId": "000322",
      "BaseNetValue": 46.90,
      "BaseGrossValue": 46.90,
      "BaseTaxValue": 0.00,
      "GTIN": null,
      "BusinessTransactionType": 0,
      "VatIdentification": 5,
      "VatPercent": 0.0,
      "NetValue": 46.90,
      "GrossValue": 46.90,
      "TaxValue": 0.00,
      "AccountingIdentifier": null,
      "PositionNumber": 0,
      "PositionReference": null,
      "CancellationPosition": false
    }
  ],
  "Payments": [
    {
      "Amount": 46.90,
      "PaymentType": "cash",
      "CurrencyIsoCode": "EUR",
      "Caption": null,
      "UniqueReadablePaymentIdentifier": null,
      "ForeignAmount": 0.0,
      "ForeignAmountExchangeRate": 0.0
    }
  ]
}