<diagnostics>
    <diagnostic xmlns="http://www.loc.gov/zing/srw/diagnostic/">
        <uri>info:srw/diagnostic/1/1</uri>
        <details>
            <url>http://sru2.visual-library.de/datacite?operation=searchRetrieve&amp;query=rec.identifier%3D12345&amp;recordSchema=mods</url>
            <headers><header name="ACCEPT" value="*/*"/><header name="ACCEPT-ENCODING" value="gzip, br, zstd, deflate"/><header name="CONNECTION" value="Keep-Alive"/><header name="COOKIE" value="session_id=20d842dcea4153253577183479fbbba881352cd3"/><header name="HOST" value="sru2.visual-library.de"/><header name="Remote-Addr" value="192.168.1.13"/><header name="USER-AGENT" value="Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"/><header name="X-FORWARDED-FOR" value="216.73.216.81"/><header name="X-FORWARDED-HOST" value="sru2.visual-library.de"/><header name="X-FORWARDED-SERVER" value="sru2.visual-library.de"/></headers>
            <params><param name="operation" value="searchRetrieve"/><param name="query" value="rec.identifier=12345"/><param name="recordSchema" value="mods"/></params>
            <additional><name>XmlRpcReportsError</name><hint>Received error from XmlRpc interface</hint><msg>"doi:12345" is unknown or illegal in this repository</msg><cql>rec.identifier="12345"</cql><remoteUrl>https://oai.datacite.org/oai?verb=GetRecord&amp;metadataPrefix=datacite&amp;identifier=doi%3A12345</remoteUrl><provider>datacite</provider><protocol>XML-RPC</protocol><mdrevision>0</mdrevision><host>https://oai.datacite.org</host><database>/oai?verb=GetRecord&amp;metadataPrefix=datacite</database><recordSyntax>DATACITE</recordSyntax><targetRecordSyntax>MODS</targetRecordSyntax><area>searchRetrieve.fetchRecords</area></additional>
            </details>
        <message>An error has occured: XmlRpcReportsError - "doi:12345" is unknown or illegal in this repository</message>
    </diagnostic>
</diagnostics>