# DynamicCardVerificationValue
<a name="API_DynamicCardVerificationValue"></a>

Parameters that are required to generate or verify Dynamic Card Verification Value (dCVV).

## Contents
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 ** ApplicationTransactionCounter **   <a name="paymentcryptographydata-Type-DynamicCardVerificationValue-ApplicationTransactionCounter"></a>
The transaction counter value that comes from the terminal.  
Type: String  
Length Constraints: Minimum length of 2. Maximum length of 4.  
Pattern: `[0-9a-fA-F]+`   
Required: Yes

 ** CardExpiryDate **   <a name="paymentcryptographydata-Type-DynamicCardVerificationValue-CardExpiryDate"></a>
The expiry date of a payment card.  
Type: String  
Length Constraints: Fixed length of 4.  
Pattern: `[0-9]+`   
Required: Yes

 ** PanSequenceNumber **   <a name="paymentcryptographydata-Type-DynamicCardVerificationValue-PanSequenceNumber"></a>
A number that identifies and differentiates payment cards with the same Primary Account Number (PAN).  
Type: String  
Length Constraints: Fixed length of 2.  
Pattern: `[0-9]+`   
Required: Yes

 ** ServiceCode **   <a name="paymentcryptographydata-Type-DynamicCardVerificationValue-ServiceCode"></a>
The service code of the payment card. This is different from Card Security Code (CSC).  
Type: String  
Length Constraints: Fixed length of 3.  
Pattern: `[0-9]+`   
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/payment-cryptography-data-2022-02-03/DynamicCardVerificationValue) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/payment-cryptography-data-2022-02-03/DynamicCardVerificationValue) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/payment-cryptography-data-2022-02-03/DynamicCardVerificationValue)