[SR-Users] kamailio V 4.2.4 IMS_Charging ro_session_timeout question

Hello; i am trying to understand how is ims_charging working . Kamailio is a S-CSCF here. kamailio and call dont have a problem but ro_session. i always get ro_session_ontimeout() ERROR. when look diameter trace , ims_charging module dont request for 30 more sec for granted and kill dialog. Thanks for helps. 14:22:51 S-CSCF ----->CC-Time 15 .. Sec CCR ---> Java-Diamaeter Server (INITIAL REQ) 14:22:51 S-CSCF <-----CC-Time 15 .. Sec CCA <--- Java-Diamaeter Server (INITIAL REQ) 14:23:01 S-CSCF ----->CC-Time 10 .. Sec CCR ---> Java-Diamaeter Server (UPDATE ) 14:23:01 S-CSCF <-----CC-Time 30 .. Sec CCA <--- Java-Diamaeter Server (UPDATE ) 14:23:31 S-CSCF ----->CC-Time 30 .. Sec CCR ---> Java-Diamaeter Server (TERMINATE ) 14:23:31 S-CSCF <-----CC-Time 30 .. Sec CCA <--- Java-Diamaeter Server (TERMINATE ) ------ LOG ----- May 7 14:23:31 /usr/local/sbin/kamailio[7602]: ERROR: ims_charging [ro_timer.c:449]: ro_session_ontimeout(): Diameter call session - event [2] May 7 14:23:31 /usr/local/sbin/kamailio[7602]: INFO: ims_charging [ro_timer.c:452]: ro_session_ontimeout(): Call/session must be ended - no more funds. May 7 14:23:31 /usr/local/sbin/kamailio[7600]: WARNING: ims_charging [dialog.c:167]: dlg_terminated(): inconsistent ro timer data on ro_session 0x7ff1eb4543b8 [] ---- CFG ------ $var(cc_ret) = Ro_CCR("CHARGING_CCR_REPLY", "orig", "SCUR", "", "15", "location"); ---- CFG ------