   </description>
   <metadata>
     <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
-      <libosinfo:os id="http://fedoraproject.org/fedora/27"/>
+      <libosinfo:os id="http://fedoraproject.org/fedora/23"/>
     </libosinfo:libosinfo>
   </metadata>
   <memory unit="KiB">409600</memory>

Domain 'test-for-virtxml' defined successfully.
Changes will take effect after the domain is fully powered off.