Well in general it says that the retailer has all serial numbers at record and that if they recive a card that dosn´t match they will only return it, unrepaired, after you payed a 25 euro fine.
You where faster this time Alfa :D
Well I am not German, but it means something along the lines of:
"Attention! All serial numbers are stored by us. In case a return sending concerns an article not supplied by us we will charge 25 Euro and, only after payment, send back the unrepaired article"
Cheers,
- JJ.