To make the payment proceed as follows:

1. Enter personal data, amount and payment description;
2. Verification of entered data;
3. Safety mode connection SSL (Secure Sockets layer / 128 bit) to X-pay system of "CARTA SI" for the entering of the credit card sensitive data;
4. Return to SEA web site to verify the transaction result. In case of positive result the total amount will be charged on the mentioned credit card and a message including the payment receipt will be sent to the specified e-mail address.