datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

    <start>

        <ref name="element-status"/>

    </start>

    <define name="element-status">

      <element name="status">

        <attribute name="code"> <data type="integer" /> </attribute>

        <attribute name="message"> <text /> </attribute>

        <optional>

          <element name="errors">

            <oneOrMore>

              <element name="error">

                <text />

              </element>

            </oneOrMore>

          </element>

        </optional>

      </element>

   </define>

</grammar>