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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 method cancels a transaction prior to authorization and reverts the card reader to the welcome screen.

:::::notice{note}

- Canceling a transaction during an EMV authorization reverses the transaction if the gateway returns an approval response.
- Cancelation of a non-EMV transaction (mag stripe, manual entry, and token) is not allowed during authorization.
:::::


## Code samples

### CWS 

#### Request

| Property | Description |
| --- | --- |
| method string required | `cancelPaymentTransaction` |
| requestId string required | Transaction request ID |
| targetType string required | `paymentGatewayConverge` |
| parameters JSONObject required | All relevant parameters for canceling transactions. |
| paymentGatewayId string required | Payment gateway ID Unique identifier of the payment gateway as returned in the `openPaymentGateway` transaction response. |
| chanId boolean required | Transaction ID **Important:** Returned in the `startPaymentTransaction` response. |


#### Response

| Property | Description |
| --- | --- |
| requestId string | Transaction request ID specified in request. |
| statusDetails string | Status of the request. |
| data JSONObject | Object holding various responses. |
| paymentGatewayCommand JSONObject | Payment gateway command |
| completed boolean | Transaction status |
| eventQueue array | Event queue |
| chanId boolean | Transaction ID Identifier used to query the status of the transaction until completion. |
| paymentTransactionData JSONObject | Payment transaction data |
| result string | Result |


#### Example

##### Request

```json
{
 "method" : "cancelPaymentTransaction",
 "requestId" : "1574338436",
 "targetType" : "paymentGatewayConverge",
 "version" : "1.0",
 "parameters" : {
 "paymentGatewayId" : "4f4912f4-9d24-4c0d-9e0c-dad8de366999",
 "chanId" : "b8428b3c-b84e-42c2-9fc6-39a834ecac27"
 }
}
```
##### Response



```json
{
 "data" : {
 "paymentGatewayCommand" : {
 "chanId" : "b8428b3c-b84e-42c2-9fc6-39a834ecac27",
 "eventQueue" : [ {
 "timeStamp" : "1717508691245",
 "statusDetails" : "CARD_READER_TRANSACTION_COMPLETED"
 } ],
 "completed" : true,
 "warnings" : [ ],
 "paymentTransactionData" : {
 "result" : "FAILED",
 "errors" : [ "ECLCommerceError ECLTransactionCanceled" ]
 }
 }
 },
 "requestId" : "1574338436",
 "statusDetails" : "REQUEST_ACCEPTED"
}
```

### Java 

```java
ECCError error = account.getTransactionProcessor().cancelTransaction(transaction, tender, transactionListener);
if (error != null) {
 // unable to cancel transaction
}
```

If the transaction is able to be canceled the `ECLTransactionProcessingListener.transactionDidCancel(ECLTransactionInterface transaction, ECLTenderInterface tender)` will be called.

### Objective-C 

```objc
NSError *error = [account.transactionProcessor cancelTransaction:transaction using:tender delegate:delegate];
if (error != nil) {
 // unable to cancel transaction
}
```

If the transaction is able to be canceled, `ECLTransactionProcessingDelegate::transactionDidCancel:using:` will be called.

### C\# 

```c#
PaymentTransactionResults tr = m_CWS.CancelPaymentTransaction(m_PaymentGatewayId, chanId, null);
```

Cancel transaction

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