I am slightly confused as to why the Junker Guard ID is not allowed to operate out of Gallia, Taus, etc etc, but it is sold in Puerto Rico. I wanted to get one for my salvager, as I treat people with Guard ID with a bit more respect. But If I'm not allowed outside Gallia, I'm breaking the rules just mounting in in Puerto Rico. Am I missing something?
I think it's necessary to use it for the Slave Liner, though can't remember for certain. I think there was an admin notice removing the restriction on going outside Gallia with it, but again, can't remember for certain. You might want to ask an admin or try to find the thread (if it exists).
If you want to be a Gallic Junker, and have the correct ID / IFF to validate your character, just...rep up, buy the Guard ID, and make a beeline for Gallia.
It is not needed for the Slave Liner and Salvager. In fact the Salvager is more a Sirian Junker thing, not Gallic.