All Cielo codes
CIELO · RETURN CODE

Cielo
66

Elo: non-compliance with anti-money-laundering laws.

Cielo saysHard decline
66

Elo: non-compliance with anti-money-laundering laws.

What it means

Blocked for compliance

The issuer cannot approve the payment for legal or compliance reasons.

What to do

Do not retry. Ask for another payment method.

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

Other Cielo codes with the same meaning

93

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.