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Codes

This section covers the different codes you can encounter when integrating with Checkout.com's APIs.

Review the supported formats for data elements like countries and currencies, along with descriptions of our API response codes.

ANI codes

See the definition of the codes returned with Account Name Inquiry checks.

API response codes

Learn more about the response codes you may receive about the status of an API request.

AVS codes

See the definition of the various codes returned with Address Verification Service (AVS) checks.

Chargeback codes

See the definitions of the various chargeback codes you may receive during the chargeback process.

Country codes

See a list of each country's ITU-T E.164 dialing code, alpha-2 ISO 3166 country code, and alpha-3 ISO 3166 country code.

Currency codes

See a list of each country's ISO 4217 currency code.

CVV response codes

Learn more about the card verification value (CVV) response codes you may receive when you carry out a CVV check or verify a card.

ECI values

When you authenticate with 3D Secure (3DS), you receive Electronic Commerce Indicator (ECI) values that indicate the authentication level and liability shift.

Error codes

See the definitions of the error codes you may receive if there is an issue with your API request.

Identity Verification codes
Beta

Learn about the different statuses and response codes you can receive for Identity Verification products.

Issuing decline codes

Understand potential decline reasons when a transaction from a card you issued fails.

Merchant category codes

See the ISO 18245 merchant category codes that are used to classify your business.

Network token provisioning codes

View card scheme responses to a network token provisioning request.

Recommendation codes

Learn more about the recommendation codes you may receive, which provide you with additional information about how and when you should retry a transaction.

Scheme fraud codes

See the definitions of the fraud codes you may receive when processing transactions using Visa and Mastercard cards.

Visa response codes

Learn more about the response codes Visa returns to inform you if and when to retry transactions.