If your credit card payment has encountered an error message with a code:

When you tried to pay your registration with your credit card but you have received an error message with a code, please check this list to know the root cause.
In this case, please try to pay again your registration with another card.

If there is no code in your error message: 

This issue might be related to the bank of your card. Please try another card from another bank or contact our support team for assistance.

In any case, if you have left the checkout of your registration, please contact the organization of the event or our support team.

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