Cisco ASR 14000 Series Management Command Reference page 149

Configuration Management Commands on Cisco IOS XR Software
RP/0/RP0/CPU0:router(config-un)# root
RP/0/RP0/CPU0:router(config)# show conf
Building configuration...
template test
username xyz
!
end-template
end
The root command is not available from the template submode, but is available in the submodes
Tip
configurable under the template submode.
OL-17231-01
Cisco ASR 14000 Series Router System Management Command Reference
root
SMR-147