<?xml version="1.0" encoding="UTF-8" standalone="no"?><searchRetrieveResponse xmlns="http://www.loc.gov/zing/srw/" xmlns:diag="http://www.loc.gov/zing/srw/diagnostic/">
  <version>1.2</version>
  <diagnostics>
    <diag:diagnostic>
      <diag:uri>200803</diag:uri>
      <diag:details/>
      <diag:message>Unsupported sru version 1.2operation=explain</diag:message>
    </diag:diagnostic>
  </diagnostics>
</searchRetrieveResponse>