samsung G920T NETWORK UNLOCK FAIL WITH Z3X

HI TEAM PLZ CHECK THIS I GET THIS ERROR WHILE I M UNLOCKING G920T NETWORK UNLOCK

Code:

Waiting ADB device... OK
Reading phone info...
Model: SM-G920T
Android version: 6.0.1
Product code: SM-G920TZKAXAR
Phone version: G920TUVU4EPF1
PDA version: G920TUVU4EPF1
CSC version: G920TTMB4EPF1
CSC country code: USA
CSC sales code: TMB
HW version: REV1.0
Phone S/N: R58G31XB4KW
Modem board: SHANNON333
RF cal date: 20150326
IMEI:
Checking Super user right... true
Initializating zTool... OK
Running zTool, please wait...
Start... OK
Init... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data... error (9)
Done with Samsung Tool PRO v.25.8