All Checkout.com codes
CHECKOUT.COM · RESPONSE CODE
Checkout.com20103
Card type / payment method not supported
Checkout.com saysIntegration issue
20103Card type / payment method not supported
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
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.