After updating the license of fortimanager, fortigate cannot connect to fortimanager

[nplljw]

Hello everyone, after updating the license for fortimanager in my testing environment, I found that fortigate couldn't connect to fortimanager. Despite entering the following command, I still couldn't connect. I hope to get your help. Thank you!
fortimanager version: 7.2.8
Fortigate version: 7.0.15
config system central-management
set type fortimanager
set serial-number " FMG-VMTM25015787"
set fmg "113.31.127.109"
end
execute central-mgmt register-device FMG-VMTM25015787 123
The following is the firewall debug information
fortigate_test_1 # diagnose debug application fgfmd
<Integer> Debug level.
fortigate_test_1 # diagnose debug application fgfmd -1
Debug messages will be on for 30 minutes.
fortigate_test_1 # diagnose debug enable
fortigate_test_1 # FGFMs: set device as in_progress
FGFMs: client:send:
get auth
serialno=FGT40FTK2109BQ01
mgmtid=1581151727
platform=FortiGate-40F
fos_ver=700
minor=0
patch=15
build=632
branch=632
maxvdom=10
fg_ip=192.168.1.4
hostname=fortigate_test_1
harddisk=no
biover=05000021
mgmt_mode=normal
enc_flags=0
mgmtip=192.168.1.4
mgmtport=443
FGFMs: Destroy stream_svr_obj
FGFMs: client:
reply 200
request=auth
serialno=FMG-VMTM25015787
user=admin
passwd=
mgmtport=443
keepalive_interval=120
chan_window_sz=32768
sock_timeout=360
mgmtid=1581151727
FGFMs: [__chg_by_fgfm_msg] set keepalive_interval: 120
FGFMs: [__chg_by_fgfm_msg] set sock timeout: 360
FGFMs: client:send:
reply 501
request=auth
FGFMs: serial no FMG-VMTM25015787 saved to FMG detect file
FGFMs: client:send:
get auth
serialno=FGT40FTK2109BQ01
mgmtid=1581151727
platform=FortiGate-40F
fos_ver=700
minor=0
patch=15
build=632
branch=632
maxvdom=10
fg_ip=192.168.1.4
hostname=fortigate_test_1
harddisk=no
biover=05000021
mgmt_mode=normal
enc_flags=0
mgmtip=192.168.1.4
mgmtport=443
FGFMs: client:
reply 200
request=auth
serialno=FMG-VMTM25015787
user=admin
passwd=
mgmtport=443
keepalive_interval=120
chan_window_sz=32768
sock_timeout=360
mgmtid=1581151727
FGFMs: [__chg_by_fgfm_msg] set keepalive_interval: 120
FGFMs: [__chg_by_fgfm_msg] set sock timeout: 360
FGFMs: client:send:
reply 501
request=auth
FGFMs: serial no FMG-VMTM25015787 saved to FMG detect file
FGFMs: client:send:
get auth
serialno=FGT40FTK2109BQ01
mgmtid=1581151727
platform=FortiGate-40F
fos_ver=700
minor=0
patch=15
build=632
branch=632
maxvdom=10
fg_ip=192.168.1.4
hostname=fortigate_test_1
harddisk=no
biover=05000021
mgmt_mode=normal
enc_flags=0
mgmtip=192.168.1.4
mgmtport=443
FGFMs: client:
reply 200
request=auth
serialno=FMG-VMTM25015787
user=admin
passwd=
mgmtport=443
keepalive_interval=120
chan_window_sz=32768
sock_timeout=360
mgmtid=1581151727
FGFMs: [__chg_by_fgfm_msg] set keepalive_interval: 120
FGFMs: [__chg_by_fgfm_msg] set sock timeout: 360
FGFMs: client:send:
reply 501
request=auth
FGFMs: serial no FMG-VMTM25015787 saved to FMG detect file
FGFMs: register device exceeds max count, session retry 3, total retry 3
FGFMs: Destroy dev register service
FGFMs: set device as unknown

[nplljw · Accepted solution]

I have found the reason. There is a space before the "set serial-number" sequence number. Don't need to help check this issue. Thank you

[Jean-Philippe_P]

Hello nplijw,

Thanks for sharing the solution and glad that you fixed the issue :)