Oscam Anfrage bekommt sporadisch rejected Group

2017/11/07 09:11:07 02DAFA62 c (ecm) wz (09C4@000000/0DAE/151A/A5:FB4AE2ED7F20DA92D7E035B54C922534): rejected group (0 ms) - DMAX HD (no matching reader)
2017/11/07 09:11:15 02DAFA62 c (ecm) wz (09C4@000000/0DAE/151A/A2:83D5B76EDDF5D40985B7127B8EAE6400:0F06000000000000:HD+ (Abo)): found (154 ms) by V13 - DMAX HD

Oscam.conf
[global]
logfile = /var/log/oscam.log
usrfileflag = 1
netprio = 1
unlockparental = 1
nice = -1
maxlogsize = 1024
waitforcards_extra_delay = 200
preferlocalcards = 1
dropdups = 1
block_same_ip = 0
block_same_name = 0
lb_auto_betatunnel = 0

[cccam]
port = 4712
nodeid = 325EC991108E14BC
version = 2.3.0
reshare = 1

oscam.user
[account]
user = wz
pwd = 123456
caid = 09C4
uniq = 1
group = 1

[account]
user = sz
pwd = 123456
caid = 09C4
uniq = 1
group = 1

oscam.server
[reader]
label = V13
description = V13
protocol = mouse
device = /dev/ttyUSB0
caid = 09C4
boxid = 12345678
ins7e11 = 15
ecmwhitelist = 09C4:51,56,63,9B,A0,69,B3,A2 <- kann hier der Fehler sein?
detect = cd
group = 1
emmcache = 1,1,2,0
blockemm-unknown = 1
blockemm-u = 1
blockemm-s = 1
blockemm-g = 1
saveemm-unknown = 1
saveemm-u = 1
saveemm-s = 1
saveemm-g = 1
blockemm-bylen = 1-31,33,35,37,40-42,44,69-104,106-255
ndsversion = 2