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U.S. Bank Europe DAC. Registered in Ireland – Number 418442..  Registered Office: Block F1, Cherrywood Business Park, Dublin 18, D18 W2X7, Ireland.
U.S. Bank Europe DAC, trading as Elavon Merchant Services, is regulated by the Central Bank of Ireland.
 
U.S. Bank Europe DAC. Registered in Ireland with Companies Registration Office. The liability of the member is limited. United Kingdom branch registered in England and Wales under the number BR022122.
U.S. Bank Europe DAC, trading as Elavon Merchant Services, is a credit institution authorised and regulated by the Central Bank of Ireland.  Authorised by the Prudential Regulation Authority.  Subject to regulation by the Financial Conduct Authority and limited regulation by the Prudential Regulation Authority.  Details about the extent of our regulation by the Prudential Regulation Authority are available from us on request.

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This section describes the message parameters for EMV Card Reversal transaction processing, which you can submit using the XML API integration method. Refer to the :magic-link[Integration Methods]{id="integration-methods"} section for more information.

The `emvreverse` transaction reverses an approved authorization from an `emvchipsale` transaction after a *decline by card*  is received from the Chip card. The Chip card may decline the transaction data even after an Issuer approval, in this case a reversal must be sent to restore the funds back to the card. This action can be performed within 5 minutes after an `emvchipsale` transaction.

For the entire list of API endpoints, refer to :magic-link[**API Endpoints**]{id="-endpoints"}.

## Request 

| Field name | Description | Required | Length | Data type |
|--------|---------------------------------|-----------|------|-------------|
| `ssl_account_id` **Formerly known as ssl_merchant_id** | Elavon-assigned Converge Account ID (AID). **Note:**  `ssl_merchant_id` will be eventually removed from the documentation. Both fields `ssl_account_id` and `ssl_merchant_id` will remain functional in the code. | Required | 6 or 7 | numeric |
| `ssl_user_id` | Converge User ID The user ID with Hosted Payment API User status that can send transaction requests through the terminal. | Required | 15 | alphanumeric |
| `ssl_pin` | Terminal ID Unique identifier of the terminal that will process the transaction request and submit to the Converge gateway. The `ssl_user_id` sending the transaction request must be associated with the terminal that will process the request. | Required | 64 | alphanumeric |
| `ssl_transaction_type` | Transaction Type **Valid value:**  `emvreverse` | Required | 20 | alphanumeric |
| `ssl_txn_id` | Transaction ID Unique identifier of the previously approved Sale (`emvchipsale`) transaction. | Required | 46 | alphanumeric |

## Response 

| Field name | Description |
|--------|---------------------------------|
| `ssl_result` | Transaction Outcome An `ssl_result` = 0 indicates a successful reversal. |
| `ssl_result_message` | Transaction Result Message A result of *SUCCESS* indicates that transaction was reversed. |
| `ssl_txn_id` | Transaction ID Unique identifier of the transaction. |
| [**Error**] | Returned only if an error occurs. Refer to the :magic-link[Error Codes]{id="error-codes"} section for more information. |
| `errorCode` | Error Code Typically, when the transaction failed validation or the request is incorrect. This will prevent the transaction from going to authorization. This is a numeric field. |
| `errorMessage` | Error Message Detailed explanation of the error. This field may be changed based on merchant configuration in the user interface. |
| `errorName` | Error Name Error name or reason for the error. |

## Example

:::::notice{important}

- In this example, you will have to change the data values, such as `my_merchant_id`, `my_user_id`, `my_pin`, and transaction data to match your Converge account and meet the needs of your website.
- Code samples provided are for demonstration only and should not be used for live transactions. All sensitive merchant data, including transaction amounts and your Converge credentials, should be placed in server side code.
:::::


### Request

```XML
xmldata=
<txn>
 <ssl_merchant_id>my_merchant_id</ssl_merchant_id>
 <ssl_user_id>my_user_id</ssl_user_id>
 <ssl_pin>my_pin</ssl_pin>
 <ssl_transaction_type>emvreverse</ssl_transaction_type>
 <ssl_txn_id></ssl_txn_id>
</txn>
```

Reversal - emvreverse

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Converge Overview

Getting Started

Transaction Types

Credit Card Transactions Overview

Sale - ccsale

Auth only - ccauthonly

Auth Only Increment - ccauthonly

Verification - ccverify

Balance inquiry - ccbalinquiry

Return - ccreturn

Void - ccvoid

Completion - cccomplete

Delete - ccdelete

Update tip - ccupdatetip

Signature - ccsignature

Add recurring - ccaddrecurring

Update recurring - ccupdaterecurring

Delete recurring - ccdeleterecurring

Submit recurring payment - ccrecurringsale

Add installment - ccaddinstall

Update installment - ccupdateinstall

Delete installment - ccdeleteinstall

Submit installment payment - ccinstallsale

Credit card force - ccforce

Credit Card Credit - cccredit

Merchant Hosted Card On File

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Debit Card Transactions Overview

Purchase - dbpurchase

Return - dbreturn

Auth Only - dbauthonly

Auth only Increment - dbauthonly

Complete - dbcomplete

Reverse - dbreverse

Debit - dbvoid

Delete - dbdelete

Inquiry - dbbainquiry

PINless bill pay - pldbillpay

Pinless debit purchase - pldpurchase

BIN Lookup - binlookup

Straight Send

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Cash Tender Transactions Overview

Sale - cashsale

Credit - cashcredit

EMV Credit/Debit Card Transactions

EMV card transactions overview

Sale - emvchipsale

Auth Only - emvchipauthonly

Swipe sale - emvswipesale

Swipe auth only - emvswipeauthonly

Card update - emvchipupdatetxn

Key exchange - emvkeyexchange

Legacy key exchange - caddbkeyexchange

Interac Refunds

Return - emvchipreturn

EMV DCC check - emvdcccheck

EBT Transactions

EBT transactions overview

Food stamp benefits

Purchase - fspurchase

Return - fsreturn

Inquiry - fsbainquiry

Force purchase - fsforcepurchase

Force return - fsforcereturn

Cash benefits

Purchase - cbpurchase

Inquiry - cbbainquiry

Gift Card Transactions

Gift Card Transactions Overview

Activation - egcactivation

Sale or Redemption - egcsale

Refund - egccardrefund

Replenishment or Reload - egcreload

Balance inquiry - egcbalinquiry

Credit - egccredit