Recall the movie Airport . . .? The cockpit scene with Peter Graves & Lew Alcindor (or he could have been Kareem Abdul Jabar by then).
Vector is a reporting agency used by carriers for agents who have debit balances. Kind of like a credit reporting agency, except for insurance. If you decide to skate with a debit balance some carriers & agencies will report you. That keeps you from getting advances from other agencies & carriers until the debit is cleared.
Some are a bit more aggressive in reporting than others.