I'm having a really tough time debugging a SharePoint SOAP call to create a list item. The SOAP body I'm sending is:
<SOAP-ENV:Envelope xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <ns0:Body>
      <ns1:UpdateListItems>
         <ns1:listName>{35BC2CB3-D2FB-4D47-B711-7502819D6E2B}</ns1:listName>
         <ns1:updates>
            <Batch OnError="Continue" ListVersion="1">
               <Method ID="1" Cmd="New">
                  <Field Name="ID">New</Field>
                  <Field Name="Title">Test Summary</Field>
               </Method>
            </Batch>
         </ns1:updates>
      </ns1:UpdateListItems>
   </ns0:Body>
</SOAP-ENV:Envelope>
No matter what I do, I always get back a SoapServerException with, "Value does not fall within the expected range," as the detail. This is on a SharePoint site that I have full access to. It's a newly created list with Title as the only required attribute. How do I figure out what the issue is?
FWIW, I have no problem with other methods like GetList and GetListItems. I'm just having no luck using UpdateListItems to add a new list item.