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Account Verification with a Zero Amount Authorization {#payments-processing-basic-zero-auth-intro}
==================================================================================================

Account verification with zero amount authorization is a standard e-commerce practice where you send a zero amount transaction to verify a card is valid and whether the card is lost or stolen. You cannot capture a zero amount authorization.  
Most card networks refer to card account validation as zero amount authorization (ZAA). These card networks have their own names for the service:

* Discover Zero Dollar Authorization
* Visa Account Verification

{#payments-processing-basic-zero-auth-intro_ul_j3f_tsl_qhc}

Processor-Specific Information
------------------------------

`Worldpay VAP`
:
AVS and CVN are supported.
:
Card types: American Express, Diners Club, Discover, JCB, Mastercard, Visa

Endpoint {#payments-processing-basic-zero-auth-intro_d8e16}
-----------------------------------------------------------

Set the ccAuthService_run field to `true`.  
Send the request to `https://ics2ws.ic3.com/commerce/1.x/transactionProcessor`.

Required Fields for Account Verification with Zero Amount Authorization {#payments-processing-basic-zero-auth-required}
=======================================================================================================================

> When relaxed requirements for address data and the expiration date are being used, not all fields in this list are required. It is your responsibility to determine whether your account is enabled to use this feature and which fields are required. For details about relaxed requirements, see [Relaxed Requirements for Address Data and Expiration Date in Payment Transactions](/docs/cybs/en-us/payments/developer/vantivcnp/so/payments/payments-relax-reqs.md "").

billTo_city
:

billTo_country
:

billTo_email
:

billTo_firstName
:

billTo_lastName
:

billTo_postalCode
:

billTo_state
:

billTo_street1
:

card_accountNumber
:

card_expirationMonth
:

card_expirationYear
:

ccAuthService_run
:
Set the value to `true`.

merchantID
:

merchantReferenceCode
:

purchaseTotals_currency

purchaseTotals_grandTotalAmount
:

Related Information {#payments-processing-basic-zero-auth-required_section_sjf_tbv_sxb}
---------------------------------------------------------------------------------------

* [API field reference guide for the Simple Order API](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/so/api-fields/api-fields-so-intro.md "")
  {#payments-processing-basic-zero-auth-required_ul_x5z_1bv_sxb}

Simple Order Example: Account Verification with a Zero Amount Authorization {#payments-processing-basic-zero-auth-ex-so}
========================================================================================================================

Request

```keyword
billTo_city=Sao Paulo
billTo_country=BR
billTo_email=null@cybersource.com
billTo_firstname=Julia
billTo_lastname=Fernandez
billTo_postalCode=01310-000
billTo_state=SP
billTo_street1=R. Augusta
card_accountNumber=41111111XXXXXXXX
card_expirationMonth=12
card_expirationYear=2023
ccAuthService_run=true
merchant_id=MID23
merchant_referenceCode=Merchant_REF
purchaseTotals_currency=mxn
purchaseTotals_grandTotalAmount=0
```

Response to a Successful Request

```
additional_processor_response=e1cdcafc-cdbb-4ef7-8788-a1234e844805
request_id=6461515866500167772420
decision=ACCEPT
reasonCode=100
merchantReferenceCode=Merchant_REF
purchaseTotals_currency=mxn
cardCategory=FccAuthService_reconciliationID=ZUDCXJO8KZRFXQJJ
ccAuthReply_amount=0
ccAuthReply_avsCode=5
ccAuthReply_authorizationCode=570110
ccAuthReply_processorResponse=1
ccAuthReply_authorizedDateTime=2022-03-01T161947Z
ccAuthReply_paymentNetworkTransactionID=111222
```

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