All Cielo codes
CIELO · RETURN CODE

Cielo
C1

Not permitted: the card cannot process debit transactions. Change the payment type or card.

Cielo saysIntegration issue
C1

Not permitted: the card cannot process debit transactions. Change the payment type or card.

What it means

Not supported

The card, method or account does not support this feature or type of transaction.

What to do

Check that the feature is enabled and supported for this card type and provider.

Don't retry as-isWho can fix it: You, the merchant
Yuno response codeUNSUPPORTED_OPERATION
Source:Cielo docs — Códigos de Retorno padrão ABECS (API E-commerce Cielo)

Other Cielo codes with the same meaning

39525373ABACAHAJFMKEN3B1

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.