Your credit card or debit card transaction has been declined. A decline can only come from your bank or credit card issuer. Please note that eBay does not have the ability to decline your financial information.
Please make sure that you read the information here, before attempting to authorize your credit card again. If a credit card is declined 3 times you will be unable to add that specific credit card information for 7 days. In the mean time you are free to add a different card to your account or make a one-time payment.