'MasterCard SecureCode' is a 3-D Secure check introduced by credit card company Mastercard. 3-D Secure adds an authentication step to your online payment.
To improve the security of internet payments and protect its customers against credit card theft, the credit card companies have introduced a so-called '3-D Secure' check. 3-D Secure adds an authentication step for online payments: after you have filled-in your credit card for making your payment, you will be automatically forwarded to the website of your credit card company. There you have to authenticate yourself. This differs per credit card company and per country, but in most cases you will need a password or a code you receive per SMS on your mobile phone to authenticate your payment. If you don't pass this check, your payment will be cancelled and your sales order will not be processed. If you need more information about the 3-D Secure check, please contact your bank or credit card company.