All Cielo codes
CIELO · RETURN CODE

Cielo
63

Security violation (invalid or not present) - check card data. Mastercard also uses it for suspected fraud / travel notice.

Cielo saysHard decline
63

Security violation (invalid or not present) - check card data. Mastercard also uses it for suspected fraud / travel notice.

What it means

Suspected fraud

The issuer or a fraud system flagged the payment as suspicious.

What to do

Do not retry automatically. Review the order, and let a genuine shopper confirm with their bank.

Don't retry as-isWho can fix it: The card issuer
Yuno response codeFRAUD_VALIDATION
Source:Cielo docs — Códigos de Retorno padrão ABECS (API E-commerce Cielo)

Other Cielo codes with the same meaning

0759BP171GKGTN7

Reference only. Codes and descriptions come from each provider's public documentation. The Yuno response code is a reference mapping and does not guarantee how a specific transaction is processed.