Tvheadend

I have TVheadend 4.1 and oscam 1.20 on two separate machines.
Tried newcamd and dvbapi without success

When I try to descramble I have descrambler: cannot decode packets for service "F3 ALPES"
CA have a green icon in CA tab

in oscam server, oscamuser.log I have :
06.03.16 00:06:13 0.0 tvheadend 172.27.29.25 45746 0 0 0 0 0 0 1457217157 1457219159 00:33:22 newcamd FFFE@FFFFFE:FFFE FFFE@FFFFFE:FFFE unknown
06.03.16 00:06:13 0.0 172.27.29.25 58200 0 0 0 0 0 0 1457215560 1457215560 00:00:00 dvbapi 0000@000000:0000 ??
??06.03.16 00:06:13 0.0 172.27.29.25 58200 0 0 0 0 0 0 1457215560 1457215560 00:00:00 dvbapi FFFE@FFFFFE:FFFE FFFE@FFFFFE:FFFE unknown

caid is 0500. Is tvh sending wrong request to oscam ?
How to test further ?

Thanks