Error editing VDOM-LINK

Hello everyone, I need to edit my vdom links but Im getting an error when trying to edit the interface, as you can see below:

Any ideas as to why this is happeing? Thank you all!

FG-200F (vdom-link) # edit CTR-LFT

name "CTR-LFT0" conflicts with names used by the system interface

node_check_object fail! for name CTR-LFT

value parse error before 'CTR-LFT'

Command fail. Return code -5

FG-200F (vdom-link) #