createInvoiceDraft

{
    "date": "2015-12-15 00:00:00Z",
    "currency": "GBP",
    "exchangeRate": 100,
    "netAmount": 0,
    "netAmountInBaseCurrency": 0,
    "grossAmount": 0,
    "marginInBaseCurrency": 0,
    "marginPercentage": 0,
    "vatAmount": 0,
    "roundingAmount": 0,
    "costPriceInBaseCurrency": 0,
    "vatIncluded": true,
    "paymentTerms": {
        "paymentTermsNumber": 4,
        "daysOfCredit": 30,
        "name": "Invoice date + 30 days",
        "paymentTermsType": "net"
    },
    "customer": {
        "customerNumber": 101
    },
    "recipient": {
        "name": "Datahouse Ltd.",
        "address": "1 Data Street",
        "zip": "DA1 1DA",
        "city": "Data Town",
        "vatZone": {
            "name": "HomeCountry",
            "vatZoneNumber": 1,
            "enabledForCustomer": true,
            "enabledForSupplier": true
        }
    },
    "delivery": {
        "address": "1 Data Street",
        "zip": "DA1 1DA",
        "city": "Data Town",
        "country": "Data Country",
        "deliveryDate": "2015-12-15 00:00:00Z"
    },
    "references": {
        "other": ""
    },
    "layout": {
        "layoutNumber": 9
    },
    "lines": [{
        "lineNumber": 1,
        "sortKey": 1,
        "unit": {
            "unitNumber": 1,
            "name": null
        },
        "product": {
            "productNumber": "211"
        },
        "quantity": 20.0000,
        "unitNetPrice": 533.98,
        "discountPercentage": 10.00,
        "unitCostPrice": 503.00,
        "totalNetAmount": 0,
        "marginInBaseCurrency": 0,
        "marginPercentage": 0
    }, {
        "lineNumber": 2,
        "sortKey": 2,
        "unit": {
            "unitNumber": 1,
            "name": null
        },
        "product": {
            "productNumber": "210"
        },
        "quantity": 84.0000,
        "unitNetPrice": 533.98,
        "discountPercentage": 10.00,
        "unitCostPrice": 463.00,
        "totalNetAmount": 0,
        "marginInBaseCurrency": 0,
        "marginPercentage": 0
    }]
}