<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
  <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <CreateTradeOrders xmlns="http://tempuri.org/">
      <req>
        <Credentials>
          <UserName>yourusername</UserName>
          <Password>yourpassword</Password>
        </Credentials>
        <identify>youridentifier</identify>
        <Entities>
          <TradeOrder>
            <BrickId>00000000-0000-0000-0000-000000000000</BrickId>
            <TradeOrderDirectionKey>Buy</TradeOrderDirectionKey>
            <Account>9b07cfc6-7374-4e34-95e8-1d50d091cf67</Account>
            <Instrument>e9044d53-778a-4522-a0b5-399eb01429ac</Instrument>
            <Cash xsi:nil="true" />
            <CashCurrencyCode>SEK</CashCurrencyCode>
            <InstrumentAmount>10</InstrumentAmount>
            <CashAmount xsi:nil="true" />
            <CommissionAmount>0</CommissionAmount>
            <OverrideCommissionAmount>false</OverrideCommissionAmount>
            <IsUnitOrder>true</IsUnitOrder>
            <LimitPrice>0</LimitPrice>
            <ExternalReference>Testing2</ExternalReference>
			<OrderSettlementType>PAYMENT</OrderSettlementType>
          </TradeOrder>
        </Entities>
      </req>
    </CreateTradeOrders>
  </s:Body>
</s:Envelope>

//Create an order using the CreateTradeOrders method
var client = new BFSServiceReference.bfsapiSoapClient();

var credentials = new BFSServiceReference.Credentials()
{
    UserName = bfsusername, //Username of administrative user in your instance of BFS
    Password = bfspassword, //Password of the administrative user in your instance of BFS
};

var response = client.CreateTradeOrders(new BFSServiceReference.CreateTradeOrderRequest()
{
    Credentials = credentials,

    identify = bfsidentifier, //Identifier is a unique token for your instance of BFS        

    Entities = new[]
    {
        new TradeOrder()
        {
            TradeOrderDirectionKey = "Buy",
            Account = new Guid("cbfe4a0d-bf05-4a7e-bdc8-1ee809817bee"),
            Instrument = new Guid("138e92a5-f1d6-4473-9ca4-45f511881676"),
            CashCurrencyCode = "EUR",
            CashAmount = 100M,
            CommissionAmount = 0M,
            ReserveAssets = true,
            ExternalReference = "MyTestOrder",
            OrderSettlementType = OrderSettlementType.PAYMENT,
            ExecutionInterfaceKey = "Manual"
        }        
    }

});

//Show information about the created orders
Console.WriteLine("Orders:");
foreach (var c in response.Entities)
{
    Console.WriteLine(c.BrickId + ", " + c.OrderNo);
}