Example create sales offer

{
     Customer: {
         Name: "Hindre",
         PartyCode: "50055",
         SalesInvLang: "ET",
         NotTDCustomer: false,
         CountryCode: "EE"
     },
     DocDate: "20200602",
     ExpireDate: "20200602",
     DeliveryDate: "20200606",
     DocType: 2,
     DocStatus: 3,
     ReserveItems: false,
     CurrencyCode: "EUR",
     OfferNo: "MPO-2001",
     OfferRow: [
         {
             Item: {
                 EANCode: "094393450511",
                 Description: "Udupeen Kaup",
                 Type: 3
             },
             Quantity: 1.0,
             Price: 100.0,
             TaxId: "b9b25735-6a15-4d4e-8720-25b254ae3d21"
         }
     ],
     TaxAmount: [
         {
             TaxId: "b9b25735-6a15-4d4e-8720-25b254ae3d21",
             Amount: 20.0
         }
     ],
     TotalAmount: 100.0, 
     Hcomment: "säilivusaja tekst",
     Fcomment: "Kauba kohaletoimetamise tekst",
     ContactInfo: "Helista teisipäeval telefonile 123456789" 
}