G900A Samsung Account remove success with only GCpro key

Using Version...1.0.0.0059
Selected Port SAMSUNG Mobile USB Modem #3 COM71
Selected Model GT-I5503
Selected Task SAMSUNG RLOCK_ADB

Searching ADB device Please wait..
Device Detected...
Security:= OFF Unsecure device
SELinux := Permissive
model:= SAMSUNG-SM-G900A
Androids Version:= 5.1.1
Description Version:= klteuc-user 5.1.1 LMY47X G900AUCU4COI5 release-keys
Platform:= msm8974 [ qcom ] [ MSM8974PRO ]
Baseband:= G900AUCU4COI5
VER:= G900AUCU4COI5/G900AATT4COI5/G900AUCU4COI5/G900AUCT4CPA5
Carrier := ATT_USA
EFS CSC := ATT
Knox Warranty := Not Void
Network Mode := 0
Simstatus:= ABSENT
ANDROID-ID = 198e56fa_00006D0AF1
Device is Unsecure Rooted

SAMSUNG RLOCK_ADB UNLOCK STARTED...
Starting RLOCK Remove...
Saving Backup...
Preparing for RLOCK Remove..

Phone Found Wait...
Model := G900A
VER := G900AUCU4COI5/G900AATT4COI5/G900AUCU4COI5/G900AUCU4COI5
Phone IMEI := null/empty
REACTIVATION LOCKED...
REACTIVATION DISABLE SUCCESS.

!!! Success !!!!
Total Time Take...00:01:15

Thnx GCpro key team!!!