eConnect - Field Service RMA Line/Serial Line error.

I am in the process of creating a custom interface to receive items on an RMA and am using eConnect to do this in a GP Dynamics 2010 environment. I am encountering an error that specifies the Return_Record_Type is missing. In the XML document it is clearly there. I am attaching the error and xml document along with the code that is setting it. I am using C# to perform this.

Any help or assistance with this would be great.

//RMA Serial Item ( GP Table: SVC05255)

detailcount = 0;

taFSRMALineSerial_ItemsTaFSRMALineSerial serialitem = new taFSRMALineSerial_ItemsTaFSRMALineSerial();

serialitem.Return_Record_Type = 1;

serialitem.RETDOCID = rmaheader.RETDOCID;

serialitem.CUSTNMBR = rmaheader.CUSTNMBR;

serialitem.LNSEQNBR = 100;

serialitem.QTYTYPE = 1;

serialitem.ITEMNMBR = "VX510 DC";

serialitem.SERLNMBR = "2-2-2-2";

serialitem.SERLTQTY = 1;

serialitem.SLTSQNUM = detailcount + 1;

serialitem.ADRSCODE = "PRIMARY";

serialitem.LOCNCODE = "RETURN";

serialitem.SVC_Original_Serial = 1;

serialitem.SVC_Original_SerialSpecified = true;

serialitem.UpdateIfExists = 1;

serialitems[detailcount] = serialitem;

eConnect Error:

Procedure or function 'taFSRMALineSerial' expects parameter '@I_vReturn_Record_Type', which was not supplied.

XMLDocument:

<?xml version="1.0" ?>

- <eConnect xmlns:xsi="www.w3.org/.../XMLSchema-instance" xmlns:xsd="www.w3.org/.../XMLSchema">

- <FSRMAType>

 <eConnectProcessInfo xsi:nil="true" />

 <taRequesterTrxDisabler_Items xsi:nil="true" />

- <taFSRMALineSerial_Items>

- <taFSRMALineSerial>

 <Return_Record_Type>1</Return_Record_Type>

 <RETDOCID>RMA0KFP000002</RETDOCID>

 <CUSTNMBR>BBTFINANC027494</CUSTNMBR>

 <ADRSCODE>PRIMARY</ADRSCODE>

 <LNSEQNBR>100</LNSEQNBR>

 <ITEMNMBR>VX510 DC</ITEMNMBR>

 <SERLNMBR>2-2-2-2</SERLNMBR>

 <LOCNCODE>RETURN</LOCNCODE>

 <SLTSQNUM>1</SLTSQNUM>

 <SVC_Original_Serial>1</SVC_Original_Serial>

 </taFSRMALineSerial>

 <taFSRMALineSerial xsi:nil="true" />

 </taFSRMALineSerial_Items>

- <taFSRMALine_Items>

- <taFSRMALine>

 <Return_Record_Type>1</Return_Record_Type>

 <RETDOCID>RMA0KFP000002</RETDOCID>

 <RETTYPE>RP</RETTYPE>

 <RETSTAT>20</RETSTAT>

 <CUSTNMBR>BBTFINANC027494</CUSTNMBR>

 <ADRSCODE>PRIMARY</ADRSCODE>

 <ITEMNMBR>VX510 DC</ITEMNMBR>

 <ITEMDESC>0126011 - P/N M251-060-36-NAA VX510 DC 6-meg</ITEMDESC>

 <LOCNCODE>RETURN</LOCNCODE>

 <RETORIG>1</RETORIG>

 <LNITMSEQ>100</LNITMSEQ>

 <QUANTITY>1</QUANTITY>

 <UOFM>EACH</UOFM>

 <CUSTOWN>1</CUSTOWN>

 </taFSRMALine>

 <taFSRMALine xsi:nil="true" />

 </taFSRMALine_Items>

- <taFSRMAMaster>

 <Return_Record_Type>1</Return_Record_Type>

 <RETDOCID>RMA0KFP000002</RETDOCID>

 <RETORIG>1</RETORIG>

 <RETSTAT>10</RETSTAT>

 <RETTYPE>RP</RETTYPE>

 <LOCNCODE>RETURN</LOCNCODE>

 <CUSTNMBR>BBTFINANC027494</CUSTNMBR>

 <ADRSCODE>PRIMARY</ADRSCODE>

 <CUSTNAME>BB&T Financial, FSB</CUSTNAME>

 <CONTACT>Attn.: BB&T Equipment Manager</CONTACT>

 <ADDRESS1>2713 Forest Hills Road</ADDRESS1>

 <CITY>Wilson</CITY>

 <STATE>NC</STATE>

 <ZIPCODE>27893</ZIPCODE>

 <Bill_To_Customer>BBTFINANC027494</Bill_To_Customer>

 </taFSRMAMaster>

 </FSRMAType>

 </eConnect>