Ok, I find Hutta Cartel codex entry on Nar Shadaa at Lower Promenade (-976; -816; 519)
It's Nar Shadaa and Hutta codex enty.
Just came to post this. Received this entry myself not an hour ago.
I've seen a couple people mention the Lower Industrial Sector location entry on Nar Shadaa, but it's not on your list as unattainable. My character is currently standing in the Lower Industrial Sector and the entry didn't trigger. How does this one work if it's not bugged?