G955U RMM unlock error

g955u unlock rmm error please help me with these

Rmm Unlock
5/5/2019
4:32:48
PM

Get Info
5/5/2019
4:32:00
PM

Rmm Unlock
5/5/2019
4:29:57
PM

RMM Unlock started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G955U
Sales Code: XAA
Country Code: USA
Timezone: Asia/Karachi
Android Version: 8.0.0 [R16NW] [SDK 26]
Build Date: Wed Jan 2 15:43:06 KST 2019
PDA Version: G955USQU5CSA4 [january 2019, rev4]
Phone Version: G955USQU5CSA4 [january 2019, rev4]
CSC Version: G955UOYN5CSA4 [january 2019, rev4]
Product Code: XAA
HIDSw Version: G955USQU5CSA4/G955UOYN5CSA4/G955USQU5CSA4/G955USQU5CSA4
Board Platform: MSM8998
Modem Platform: MSM8998
Serial Number: R38J40RCWRX
Imei: 355979082068533
Unique Number: 988954324356525748
Connections: AT,MTP
Battery Status: 3.73V (11%)
Network Type: GSM
SIM Status: READY
Multisim Config: SS
Knox Version: v30
Warranty Bit: 0
Security Patch: 2019-01-01
Data Encryption State: encrypted
Unlocking RMM...
The operation is in progress. Be patient! Do NOT disconnect the phone!
It seems, this unlock method is not supported by the phone.
Unlock failed.
Finished at local time: [05.05.19 22:13:56]
WorkID: 58857563