[SR-Users] Kamailio XCAP for Kamailio IMS

Hi, I'm using Kamailio SIMPLE AS server as the presence and XCAP solution as the extension for my Kamailio based IMS platfom. As the base Presence configuration i'm using the default config as is described inside of the tutorial from ASIPTO site, it works well for pure ietf SIP SIMPLE environment. But when using it with the IMS, I sniff during putting the new record 500 Error. May somebody show me a direction what should be wrong? thanks palo PUT /xcap-root/resource-lists/users/palo/index/~~/resource-lists/list%5B@name=%2 2doubango%22%5D/entry%5B@uri=%22sip:segi@ims1.sip.uniza.sk%22%5D HTTP/1.1 Host: 158.193.139.36:5060 Content-Length: 151 Connection: Keep-Alive User-Agent: XDM-client/OMA1.1 X-3GPP-Intended-Identity: palo Content-Type: application/xcap-el+xml <entry uri="sip:segi@ims1.sip.uniza.sk" xmlns="urn:ietf:params:xml:ns:resource-lists"> &lt;display-name&gt;segi(a)ims1.sip.uniza.sk&lt;/display-name&gt; </entry>HTTP/1.1 500 Server error Via: SIP/2.0/TCP 158.193.152.64:20735 Server: kamailio (3.1.2 (i386/linux)) Content-Length: 0