Tacacs configuration - Authentication OK but no access to vdom

Hello,

I'm actually having an issue when configuration Tacacs+. Authentication is working correctly but I don't have access to vdoms. I'm running on FortiOS v5.4.5,build1138 (GA).

Configuration : 

config vdom
edit elbc-mgmt
config user tacacs+
    edit "TACACS-ISE"
        set server "x.x.x.x"
        set key ENC zqwEyuAFNC55u3Ve4ryjqLYTZTF91Wva825q4IkLKYKoIGUZ3l11QyuAOukWRP8Ejn11hODEqj/+yox3kD20pt0JWuhMSC7U/EVRSiwb9o6Dwx9SRlGhoXSPmHtQ15iN+8kGdn6FLsqzxpOAsXqJY79sqR6DsoPVsjxBx19ceUpJjary0oApEngL80aZeFIdluwA==
        set authorization enable
    next
end
config user group
    edit "TACACS_Group"
        set member "TACACS-ISE"
    next
end
 
config global
config system admin
    edit "TACACS_User"
        set remote-auth enable
        set accprofile "noaccess"
        set comments ''
        set vdom "elbc-mgmt"
        set schedule ''
        set two-factor disable
        set email-to ''
        set sms-server fortiguard
        set sms-phone ''
        set guest-auth disable
        set wildcard enable
        set remote-group "TACACS_Group"
        set accprofile-override enable
        set radius-vdom-override disable
    next

config system accprofile
    edit "noaccess"
    next
    edit "Read_Write"
        set mntgrp read-write
        set admingrp read-write
        set updategrp read-write
        set authgrp read-write
        set sysgrp read-write
        set netgrp read-write
        set loggrp read-write
        set routegrp read-write
        set fwgrp read-write
        set vpngrp read-write
        set utmgrp read-write
        set wanoptgrp read-write
        set endpoint-control-grp read-write
        set wifi read-write
    next
    edit "Read_Only"
        set mntgrp read
        set admingrp read
        set updategrp read
        set authgrp read
        set sysgrp read
        set netgrp read
        set loggrp read
        set routegrp read
        set fwgrp read
        set vpngrp read
        set utmgrp read
        set wanoptgrp read
        set endpoint-control-grp read
        set wifi read
    next
end

Below admin status command :

FortiGate $ get system admin status username: user login local: ssh login device: base-mgmt:10.101.10.4:22 login remote: 10.101.10.15:64576 login vdom: elbc-mgmt login access profile: Read_Write login started: 2017-10-02 13:57:02 current time: 2017-10-02 13:57:15

Does anyone encounter this issue? User need to have access to all vdoms but it seems in my case he only have access to 1 vdom.

Thank you for your help

Eric