Step 4: Create SalesOrder

var order = new SalesOrder
{
    customer = "10001",
    description = "This is the order description"
};
order.Add(new SalesOrderLine
{
    inventory = "2",
    quantity = 5,
    lineDescription = "Product line description",
    unitPrice = 500
});
                    
await vismaNet.SalesOrder.Add(order);