Quality is delighting customers
whther we enterd corect pin num, invalid amt
unplug the network cable
Enter wrong Credentials.......
and one more ' Keep your account balance is Zero'.. and make the transaction..
Enter an amount which is more than your credit card limit;
Enter wrong credit card information;
Down your net during processing;
Do refresh during transaction is in process;
Use back button to fail your transaction.
i have ample credit limit
i have correct credit card information
even though though transaction failure
then what the reason (same question asked in interview)