Sharepoint2013GetListItemsWeb服务返回库中的文件夹列表，而不是文件夹中的文件列表

我有一个问题能够得到一个文件夹中的项目列表，它不断给我的列表文件夹在图书馆，而不是文件列表中指定的文件夹。

我正在使用 C# 程序，使用以下方法调用 Web 服务 GetListItems，并且这一切似乎都可以正常工作：

[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://schemas.microsoft.com/sharepoint/soap/GetListItems", RequestNamespace="http://schemas.microsoft.com/sharepoint/soap/", ResponseNamespace="http://schemas.microsoft.com/sharepoint/soap/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
public System.Xml.XmlNode GetListItems(string listName, string viewName, System.Xml.XmlNode query, System.Xml.XmlNode viewFields, string rowLimit, System.Xml.XmlNode queryOptions, string webID) {
    object[] results = this.Invoke("GetListItems", new object[] {
                listName,
                viewName,
                query,
                viewFields,
                rowLimit,
                queryOptions,
                webID});
    return ((System.Xml.XmlNode)(results[0]));
    }

参数值如下：

listName = "Letters"
viewName = null
query = null
viewFields.OuterXml = "<ViewFields>
                            <FieldRef Name="ID" /> 
                            <FieldRef Name="Title" />
                            <FieldRef Name="Modified" />
                            <FieldRef Name="Status" />
                            <FieldRef Name="_UIVersion" />
                            <FieldRef Name="_UIVersionString" />
                            <FieldRef Name="EpisodeId" />
                        </ViewFields>"
rowLimit = null
queryOptions.OuterXml = "<QueryOptions>
                            <IncludeMandatoryColumns>FALSE</IncludeMandatoryColumns>
                            <Folder>http://D3TVCAPP-APP02.test.local/Letters/ABBOTT, Nash  _489611</Folder>
                            <DateInUtc>TRUE</DateInUtc>
                         </QueryOptions>"
webID = null

它实际上返回了一个结果，它正在击中服务，结果如下所示：

results.OuterXml =  
    "<listitems xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns="http://schemas.microsoft.com/sharepoint/soap/">
        <rs:data ItemCount="2">
            <z:row 
                ows_ID="84" 
                ows_Modified="2021-06-09T09:50:11Z" 
                ows__UIVersion="1" 
                ows__UIVersionString="0.1" 
                ows__ModerationStatus="2" 
                ows__Level="2" 
                ows_UniqueId="84;#{C8E8EC38-6DD5-4275-873A-B829BA850A54}" 
                ows_owshiddenversion="1" 
                ows_FSObjType="84;#1" 
                ows_Created_x0020_Date="84;#2021-06-09T09:50:11Z" 
                ows_ProgId="84;#" 
                ows_FileLeafRef="84;#ABBOTT, Nash  _489611" 
                ows_PermMask="0x7fffffffffffffff" 
                ows_FileRef="84;#Letters/ABBOTT, Nash  _489611" 
                ows_Editor="1;#John Smith" 
                ows_MetaInfo="84;#" 
                ows_Last_x0020_Modified="84;#2021-06-09T09:50:14Z" 
            />
            <z:row 
                ows_ID="3" 
                ows_Modified="2020-11-04T13:02:42Z" 
                ows__UIVersion="1" 
                ows__UIVersionString="0.1" 
                ows__ModerationStatus="2" 
                ows__Level="2" 
                ows_UniqueId="3;#{1CA7B690-BF90-41EC-A5EA-E910C8D72376}" 
                ows_owshiddenversion="1" 
                ows_FSObjType="3;#1" 
                ows_Created_x0020_Date="3;#2020-11-04T13:02:42Z" 
                ows_ProgId="3;#" 
                ows_FileLeafRef="3;#SMITH, JOHN  _483835" 
                ows_PermMask="0x7fffffffffffffff" 
                ows_FileRef="3;#Letters/SMITH, JOHN  _483835" 
                ows_Editor="1;#John Smith" 
                ows_MetaInfo="3;#" 
                ows_Last_x0020_Modified="3;#2020-11-06T16:59:03Z" 
            />
        </rs:data>
    </listitems>"

为代码墙道歉，我只是希望有人可以帮助我并希望提供尽可能多的信息。我无法弄清楚这一点，我觉得我做的一切都是正确的。任何人都知道我做错了什么？