<?xml version="1.0" encoding="UTF-8"?><Bundle xmlns="http://hl7.org/fhir">
  <id value="bundle-search-warning"/>
  <meta>
    <lastUpdated value="2017-03-14T08:23:30+11:00"/>
  </meta> 

  <type value="searchset"/>  
  <total value="0"/>
  <link>
    <relation value="self"/>
    <url value="https://example.org/fhir/Observation?patient.identifier=http://example.com/fhir/identifier/mrn|123456"/>
  </link>

  <entry>
    <fullUrl value="urn:uuid:2866af9c-137d-4458-a8a9-eeeec0ce5583"/>
      <!--  the matching resource  -->
    <resource>
      <OperationOutcome>
        <id value="warning"/>
        <text>
          <status value="generated"/>
          <div xmlns="http://www.w3.org/1999/xhtml">There is no matching patient for MRN 123456</div>
        </text>
        <issue>
          <severity value="warning"/>
          <code value="not-found"/>
          <details>
            <text value="There is no matching patient for MRN 123456"/>
          </details>
        </issue>
      </OperationOutcome>
    </resource>
    <search>
        <!--  this is not a match - it's about the search  -->   
      <mode value="outcome"/> 
    </search>
  </entry>
</Bundle>