SM-G965U unlock error

Operation: Unlock
Selected model: SM-G965U
Software version: 35.2

Checking Login and Password... OK
Ballance: 25 crd.
You have 25 credit(s) left. This operation takes 8 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G965U
Android version: 8.0.0
PDA version: G965USQS3ARIB
CSC version: G965UOYN3ARIB
Phone version: G965USQS3ARIB
Product code: SM-G965UZBAATT
CSC country code: USA
CSC sales code: ATT
HW version: REV1.1
RF cal date: 2018.02.20
Chip name: SDM845
Modem board: SDM845
Security patch: 2018-10-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
This phone is ATT and unlock is not supported by this method

Done with Samsung Tool PRO v.35.2