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When a card payment is authorized, the issuer can return the result of several verification checks the network ran against the card data the customer provided — most importantly AVS (Address Verification Service) and the CVV / CVC match. Yuno relays those results back to you on every card transaction so you can use them in your own risk, reconciliation, or retry logic. This guide covers:
  • What each verification result means
  • Where to find them in the API response and webhooks
  • How to interpret the codes
  • How to use them in your decision flow

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What gets checked

CheckWhat it verifiesField
Street address (AVS)First line of the billing address the customer entered matches what the issuer has on file.address_line_1_check
Postal / ZIP code (AVS)The billing postal code matches the issuer’s record.zip_code_check
Cardholder nameThe cardholder name on the request matches the issuer’s record. Coverage varies widely by network and country.card_holder_name_check
Card security code (CVV / CVC / CVV2)The 3- or 4-digit security code on the card matches.card_security_code_check
All four are issuer-driven: Yuno does not compute them, it forwards exactly what the acquirer / card network returns.

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Where to find them in the response

The block lives on the card detail of the payment method, and is duplicated on each transaction that ran a verification: 
payment.payment_method.payment_method_detail.card.verification_services
payment.transactions.payment_method.detail.card.verification_services
payment.transactions_history[].payment_method.detail.card.verification_services
It appears on the response of:
  • POST /v1/payments — Create payment
  • GET /v1/payments/{id} — Retrieve payment
  • POST /v1/payments/{id}/capture, /refund, /cancel, etc.
It is also included in payment webhook events (payment.created, payment.updated, …), inside the same payment_method.detail.card path.

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Example response (excerpt)

{
  "id": "p_01HZK3TJX5W8R7Q2V4N6Y8M1B3",
  "status": "SUCCEEDED",
  "payment_method": {
    "type": "CARD",
    "payment_method_detail": {
      "card": {
        "authorization_code": "123456",
        "card_data": {
          "brand": "VISA",
          "iin": "411111",
          "lfd": "1111"
        },
        "verification_services": {
          "address_line_1_check":     "PASS",
          "zip_code_check":           "PASS",
          "card_holder_name_check":   "UNAVAILABLE",
          "card_security_code_check": "PASS"
        }
      }
    }
  }
}
If none of the checks were performed, the entire verification_services object is omitted from the response.

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Result values

Yuno normalizes the result of every check returned by the issuer / acquirer into one of four canonical values. Each of the four fields takes the same enum:
ValueMeaning
PASSThe check ran and the value matched the issuer’s record.
FAILThe check ran and the value did not match.
UNAVAILABLEThe check could not be completed — the issuer is not certified, did not respond, or does not support the check in this region.
UNCHECKEDThe check was not performed for this transaction (e.g. the merchant did not send a CVV, or the provider does not run AVS).

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How to use these results

AVS and CVV results are not authorization decisions — the transaction can be approved even when the checks fail. They are advisory signals you can fold into your own risk strategy. A simple decision matrix many merchants use:
AVS (address_line_1_check / zip_code_check)CVV (card_security_code_check)Suggested action
PASSPASSAccept.
PASSFAILSoft decline / step-up — billing data looks right but the security code is wrong.
FAILPASSReview — billing-data mismatch is a strong fraud signal even with a correct CVV.
FAILFAILDecline.
UNAVAILABLE / UNCHECKEDanyTreat as unknown — fall back to other risk signals (3DS result, fraud-screening score).
Because verification coverage varies by issuer and region, any decisioning you build on top should:
  1. Default to the authorization decision. A SUCCEEDED transaction should ship unless your risk policy says otherwise.
  2. Combine signals. Pair CVV / AVS with fraud_screening, the three_d_secure result, and provider_data.iso8583_response_code.
  3. Tolerate UNAVAILABLE and UNCHECKED. Many cards in Latin America and EMEA do not run AVS at all.

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Sending verification data on the request

You can also pass verification_services into Yuno on the create-payment request — for example, when relaying upstream auth results from a system of record. The same four fields are accepted under: 
payment_method.payment_method_detail.card.verification_services
When provided on the request, Yuno forwards the values to the downstream provider where supported.