The new differentials came right from Dana with the fluid already in them. It would be worth checking with the dealer to see if that was the case for...
You may want to check with the local Safelite as well. When I had my Cayenne S they took care of me and the local Porsche dealer sent all their glass...
That "sticker" is from the supplier of the part. Not all parts would go through all 3 inspections FYI. Looks like that part was subjected to the hand...