consumerAuthenticationInformation. authenticationTransactionId {#cons-auth-info-authentication-txn-id}
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Payer authentication transaction identifier that links the check enrollment and validates authentication transactions.  
Use this field to resend the one-time password.  
This field is available only for the `RuPay` processor for the payer authentication seamless flow.  
Get the value for this field from the consumerAuthenticationInformation. authenticationTransactionId field in the check enrollment response.

Specifications {#cons-auth-info-authentication-txn-id_Specifications}
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* **Data Type:** String
* **Data Length:** 26

Mapping Information {#cons-auth-info-authentication-txn-id_Mapping}
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* **REST API Field:** consumerAuthenticationInformation.authenticationTransactionId
* **SCMP API Fields:**
  * pa_authentication_transaction_id
  * pa_enroll_authentication_transaction_id
    {#cons-auth-info-authentication-txn-id_ul_icv_fly_pzb}
* **Simple Order API Fields:**
  * payerAuthEnrollReply_authenticationTransactionID
  * payerAuthEnrollService_authenticationTransactionID
* payerAuthValidateService_authenticationTransactionID