how to unlock N910T3 ?

Model: SM-N910T3
Android version: 6.0.1
Product code: SM4N910TZKKTMB
Phone version: N910T3UVS2EPG2
PDA version: N910T3UVS2EPG2
CSC version: N910T3TMB2EPG2
CSC country code: USA
CSC sales code: TMB
HW version: REV1.1
Phone SN: RF8H11TX1FM
Modem board: MDM9225M
RF cal date: 2016.01.22

Done with Samsung Tool PRO v.27.0

==========================

Operation: Unlock
Selected model: SM-N910T3
Selected port: COM7 SAMSUNG Mobile USB Serial Port
Software version: 27.0

Reading phone info…
Reading IMEI… OK
IMEI: 352218071654323
Unlocking… error (0)
Done with Samsung Tool PRO v.27.0