You can see this datacron from a tunnel in the north of the High Security Lockdown – but it’s protected by a red forcefield, so you’ll need to go through the garbage incinerator to get to it from the other side.
Quick Travel / Taxi
Imperial side, there really isn’t a good way to taxi to this one. You can technically take the quick travel to the Network Security District and take the exit that leads to the High Security Lockdown, it’s kind of in the bottom right-ish of the map and is a bit of a confusing run especially if you don’t have the whole map unlocked. A way better choice is to take the Imperial [HEROIC 2+] Building a Better Beast heroic shuttle as it will at least put you on the same map as the datacron, if you do use it just run east to get to the datacron instead of entering the green door.
Find the Ramp
There is a ramp on some crates that can be climbed to the upper level of the High Security Lockdown map, you can find this just south of the Alien Outreach Center on the map.
Take the Elevator into the Incinerator
Follow the catwalk until you find the blue elevator button terminal.
Before you take the elevator, memorize this code: 326:3827.
Once you take the elevator to the Incinerator Room, you’ll be set on fire, and you will need this code to activate the maintenance panel on the other side of the incineration room.
Enter the code 326:3827, which is Star Wars movie reference.
Datacron and Slot Machine
Once you open the incinerator door by putting in the code 326:3827 which will be second in the list of codes, you can then run through and get out of the fire.
Beside the datacron is another object called an Old Slot Machine that is glowing blue. You should right-click this while you are in here, as it gives you an item you need for a Matrix Shard somewhere else on Nar Shaddaa. If someone else has clicked it recently, it’s going to take a few second for it to glow blue and be clickable again.
You can then use the Forcefield Control Console to exit out.