title: Uncaught Error: The property or field has not been initialized
body: <p>I am trying to run the following code in a simple sharepoint app, but I got this error:</p>
  
  <pre><code>Uncaught Error: The property or field has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested. 
  </code></pre>
  
  <p>Code is this one:</p>
  
  <pre><code>var collListItems;
  $(document).ready(function () {
      getConfigValues();
  });
  function getConfigValues() {
      var context = SP.ClientContext.get_current();
      var configList = context.get_web().get_lists().getByTitle('Configuration Values');
      var camlQuery = new SP.CamlQuery();
      collListItems = configList.getItems(camlQuery);
      context.load(collListItems);
      context.executeQueryAsync(onGetConfigValuesSuccess, onGetConfigValuesFail);
  }
  function onGetConfigValuesSuccess() {
      var OrgLogoUrl;
      var OrgName;
      var listItemEnumerator = collListItems.getEnumerator();
      while (listItemEnumerator.moveNext()) {
          var oListItem = listItemEnumerator.get_current();
          var current = oListItem.get_item('Title');
          switch (current) {
              case 'OrganizationName':
                  OrgName = oListItem.get_item('Value');
                  break;
              case 'OrganizationLogoUrl':
                  OrgLogoUrl = oListItem.get_item('Value');
                  break;
          };
      }
      if (OrgName &amp;&amp; OrgName.length &gt; 0) {
          $('#DeltaPlaceHolderPageTitleInTitleArea').html(OrgName);
          $('.ms-siteicon-img').attr('title', OrgName);
      }
      if (OrgLogoUrl &amp;&amp; OrgLogoUrl.length &gt; 0)
          $('.ms-siteicon-img').attr('src', OrgLogoUrl);
      else
          $('.ms-siteicon-img').attr('src', '../Images/AppLogo.png');
  }
  function onGetConfigValuesFail(sender, args) {
      alert('Failed to get the Configuration Values. Error:' + args.get_message());
  }
  </code></pre>
  
  <p>The code is from a book, without any modifications:</p>
  
  <pre><code>OrgName = oListItem.get_item('Value');
  </code></pre>