UpdateListItems not working (New)

Question

The following code compiles with no errors:

        ListsWebServices.Lists listService = new ListsWebServices.Lists();
        listService.Credentials = System.Net.CredentialCache.DefaultCredentials;
        listService.Url = "http://toplevel/OC/coldrooms/_vti_bin/lists.asmx";
        System.Xml.XmlNode ndListView = listService.GetListAndView("Test", "");
        string strListID = ndListView.ChildNodes[0].Attributes["Name"].Value;
        string strViewID = ndListView.ChildNodes[1].Attributes["Name"].Value;
        System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
        System.Xml.XmlElement batchElement = doc.CreateElement("Batch");
        batchElement.SetAttribute("OnError", "Continue");
        batchElement.SetAttribute("ListVersion", "1");
        batchElement.SetAttribute("ViewName", strViewID);
        batchElement.InnerXml = "<Method ID='1' Cmd='New'>" +
        "<Field Name='ID'>New</Field>" +
        "<Field Name='User'>MR ANDERSON</Field>" +
        "</Method>";
        try
        {
            listService.UpdateListItems(strListID, batchElement);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

But does not add any new item to the List, I have confirmed that it gets the right GUID's by opening the list in sharepoint designer and cross referencing. Any advice as to where I am going wrong would be greatly appreciated.

Answer 1

I found the answer, turns out that Internal field names can and often are separate from External Field names. In short the created name "User" was not in fact called "User", it was something else.

Answer 2

Try passing "" as the view guid like: batchElement.SetAttribute("ViewName", "");

Also check that : 1. what is the type of the USER filed? 2. Are there any mandatory fields in the list?