In some particular cases your Card can be declined by a merchant. Such merchants can be:
1) Car rental companies and hotels which do not allow prepaid cards.
2) Music or video stores where, due to country-specific copyright licenses, merchants restrict the usage of credit or prepaid cards not issued in the domestic market.
3) PointsPay Cards are currently issued in Switzerland, therefore your Card may be declined by a merchant that does not accept credit or prepaid cards not issued in the domestic market.