after requests a key recovery with:
public RequestId requestRecoveryPrivateKey(KeyId keyID,String base64Certificate) throws Exception
{
    //trim header and footer from cert
    if(base64Certificate.contains(CertData.HEADER)) {
        base64Certificate = base64Certificate.substring(CertData.HEADER.length(),
                base64Certificate.indexOf(CertData.FOOTER));
    }

    log("Requesting X509 key recovery." + keyID);
    KeyRequestResponse response = keyClient.recoverKey(keyID, null, null, null, base64Certificate);
    RequestId requestId = response.getRequestId();
    log("ask kra admins to approve request "+requestId);


    KeyRequestInfo info = keyClient.getRequestInfo(requestId);
    log("info about request to approve");
    printRequestInfo(info);

    return requestId;
}
 
when I try to find request by keyId 
    public List<KeyRequestInfo> findRecoveryRequest(KeyId keyid)
    {
//        String requestState,
//        String requestType,
//        String clientID,
//        RequestId start,
//        Integer pageSize,
//        Integer maxResults,
//        Integer maxTime)
        ArrayList<KeyRequestInfo> result = new ArrayList<KeyRequestInfo>();
        KeyRequestInfoCollection requests = keyClient.listRequests(null, "recovery", null, null, 99999, Integer.MAX_VALUE, 99999);
        for (KeyRequestInfo keyRequestInfo : requests.getEntries()) {
            KeyId reqKeyId = keyRequestInfo.getKeyId();
            printRequestInfo(keyRequestInfo);

            log("req "+keyRequestInfo.getRequestId()+" "+reqKeyId+"==" +keyid);
            if(keyid.equals(keyRequestInfo.getKeyId()))
            {
                result.add(keyRequestInfo);
            }
        }
        log("found " + result.size() + " requests");
        return result;
    }

keyClient.listRequests(null, "recovery", null, null, 99999, Integer.MAX_VALUE, 99999); 
returns collection with null KeyUrl so getKeyId returns also a null

but when I open requests with some null in KeyUrl in agent (https://localhost.localdomain:8443/kra/agent/kra/processReq?op=processReq&seqNum=113)
I got all informations I need:
Request 113
Request Status:pending Type:recovery Created on:21/10/2015, 11:25:41 Updated by:kraagent Updated on:21/10/2015, 11:25:41 Recovery Information Key identifier:42 Recovery Initiating Agent:kraagent Recovery Approving Agents: Action Asynchronous Key Recovery: Grant

How to get Key Identiver from keyClient?