It means no lot was tracible, no serialized number to track who received a dose from which lot/vial.
So even if it was something the company would normally be liable for, like contaminated vials from an improperly sterilized bottle during manufacturing, there is no way to ever trace anything back.
In a nutshell literally 0 liability for any wrongdoing regardless of the level of incompetence or malfeasance of the manufacture.
There is no way to prove what vial / lot you received a dose from. This means there was no way to know if it was handled properly after it was shipped; so no way to hold the company accountable. The traceability chain was destroyed from the very inception of the process.
Wow!
Thanks for explaining