紧急求救，Delphi7调用C#(Web Service)出现莫名其妙的错误！！！在线等待

Question

开发环境：Delphi7(Client) + C#(Web Service)
Web Service 方法:调用方法：
objSoap.SetSellDataLog(sRte)
sRte="<HQInfo>'#$D#$A'  <Para>'#$D#$A'    <Uname>NB-HBBJ013</Uname>'#$D#$A'    <UPW>1234</UPW>'#$D#$A'    <RefDate>1991-01-01</RefDate>'#$D#$A'  </Para>'#$D#$A'  <N_Sell>'#$D#$A'    <SellID>2</SellID>'#$D#$A'    <SellNO>BJ01050712002</SellNO>'#$D#$A'    <SellStateID>2</SellStateID>'#$D#$A'    <SellReason>0</SellReason>'#$D#$A'    <DateSell>2005-07-12 13:13:44</DateSell>'#$D#$A'    <SellMemo></SellMemo>'#$D#$A'    <OwnerID>1221</OwnerID>'#$D#$A'    <HandlerID>30</HandlerID>'#$D#$A'    <DateHandle>2005-07-12 13:14:09</DateHandle>'#$D#$A'    <DateCreated>2005-07-12 13:13:44</DateCreated>'#$D#$A'    <DateModified>2005-07-12 13:13:44</DateModified>'#$D#$A'    <CreatedBy>30</CreatedBy>'#$D#$A'    <ModifiedBy>30</ModifiedBy>'#$D#$A'    <BizRoleID>4</BizRoleID>'#$D#$A'    <FormTypeID>1</FormTypeID>'#$D#$A'    <IsEnable>1</IsEnable>'#$D#$A'    <CustomerID>1</CustomerID>'#$D#$A'    <CustomerName>345</CustomerName>'#$D#$A'    <IsPayed>True</IsPayed>'#$D#$A'    <PayType>现金</PayType>'#$D#$A'    <IsShipment>True</IsShipment>'#$D#$A'    <InvoiceNo>123</InvoiceNo>'#$D#$A'    <IsSend>1</IsSend>'#$D#$A'  </N_Sell>'#$A#$D'  <N_SellDetail>'#$D#$A'    <SellDetailID>2</SellDetailID>'#$D#$A'    <OwnerID>1221</OwnerID>'#$D#$A'    <SellNO>BJ01050712002</SellNO>'#$D#$A'    <SellObjectID>14</SellObjectID>'#$D#$A'    <SellObjectNO></SellObjectNO>'#$D#$A'    <Quantity>1</Quantity>'#$D#$A'    <UnitPrice>143</UnitPrice>'#$D#$A'    <FormTypeID>1</FormTypeID>'#$D#$A'    <Flag>1</Flag>'#$D#$A'    <SendFlag>0</SendFlag>'#$D#$A'  </N_SellDetail>'#$A#$D#$A#$D'</HQInfo>";
出错信息：
Project Test.exe raised exception class EAccessViolation with massage 'Access violation at address 006A3079 in module 'Test.exe'. Read of address 00000000'.Process stopped. Use Setup or run to continue.
附加信息：
将上述参数放到NotNet测试环境（C#）中测试没有问题。

Answer 1

webservice地址：
http://210.51.0.216/HPWebService/DataAccess.asmx
方法：
SetSellData
参数：
<HQInfo>'#$D#$A'  <Para>'#$D#$A'    <Uname>NB-HBBJ013</Uname>'#$D#$A'    <UPW>1234</UPW>'#$D#$A'    <RefDate>1991-01-01</RefDate>'#$D#$A'  </Para>'#$D#$A'  <N_Sell>'#$D#$A'    <SellID>2</SellID>'#$D#$A'    <SellNO>BJ01050712002</SellNO>'#$D#$A'    <SellStateID>2</SellStateID>'#$D#$A'    <SellReason>0</SellReason>'#$D#$A'    <DateSell>2005-07-12 13:13:44</DateSell>'#$D#$A'    <SellMemo></SellMemo>'#$D#$A'    <OwnerID>1221</OwnerID>'#$D#$A'    <HandlerID>30</HandlerID>'#$D#$A'    <DateHandle>2005-07-12 13:14:09</DateHandle>'#$D#$A'    <DateCreated>2005-07-12 13:13:44</DateCreated>'#$D#$A'    <DateModified>2005-07-12 13:13:44</DateModified>'#$D#$A'    <CreatedBy>30</CreatedBy>'#$D#$A'    <ModifiedBy>30</ModifiedBy>'#$D#$A'    <BizRoleID>4</BizRoleID>'#$D#$A'    <FormTypeID>1</FormTypeID>'#$D#$A'    <IsEnable>1</IsEnable>'#$D#$A'    <CustomerID>1</CustomerID>'#$D#$A'    <CustomerName>345</CustomerName>'#$D#$A'    <IsPayed>True</IsPayed>'#$D#$A'    <PayType>现金</PayType>'#$D#$A'    <IsShipment>True</IsShipment>'#$D#$A'    <InvoiceNo>123</InvoiceNo>'#$D#$A'    <IsSend>1</IsSend>'#$D#$A'  </N_Sell>'#$A#$D'  <N_SellDetail>'#$D#$A'    <SellDetailID>2</SellDetailID>'#$D#$A'    <OwnerID>1221</OwnerID>'#$D#$A'    <SellNO>BJ01050712002</SellNO>'#$D#$A'    <SellObjectID>14</SellObjectID>'#$D#$A'    <SellObjectNO></SellObjectNO>'#$D#$A'    <Quantity>1</Quantity>'#$D#$A'    <UnitPrice>143</UnitPrice>'#$D#$A'    <FormTypeID>1</FormTypeID>'#$D#$A'    <Flag>1</Flag>'#$D#$A'    <SendFlag>0</SendFlag>'#$D#$A'  </N_SellDetail>'#$A#$D#$A#$D'</HQInfo>