ios - xcode xml web service missing node

Question

Although the proper operation of the Web service or Web service xcode comes with missing content. There are five nodes in the web service node values ​​are, however, two of reply from the web service does not.How can I solve this problem?

<parent>
   <node1> content1 </node1>
   <node2> content2 </node2>
   <node3> longer content  </node3>// missing response
</parent>