strange status

i am seeing some strnge stuff with SIMTRACE .. when i have a modem communicating with SIM, and simtrace in sniffer mode i see a command 0x00 0xa4 0x04 0x04 0x10 + data (0xa0 0x00 0x00 0x00 0x87 0x10 0x02 0xff 0xff 0xff 0xff 0x89 0x06 0x19 0x00 0x00) and got response + status  (0x61, 0x44) but in remote SIM environment. this SIM card return 0x69 0x99 do you know what that mean ???  i dont know whether it is timing or something else ? all previous commands seem to work just fine thanks