We have an announcement for users who purchase Npoints through Paybyme Credit Card option with their Ziraat Bank credit cards.
Hence forward, Ziraat Bank card owners won't purchase Npoints that worth over 100 Turkish Lira for each payment. If you try to make payment over 100 Turkish Lira, you will see "System Error (Sistem Hatası)" on your screen and payment won't be completed.
If you want to purchase more Npoints that worth over 100 Turkish Lira, you can make your payments as will be above 100 Turkish Lira in pieces. (Please don't forget that there is another limitation for payment attempt daily/weekly/monthly)