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Elavon Financial Services DAC. Registered in Ireland – Number 418442.
Registered Office: Block F1, Cherrywood Business Park, Dublin 18, D18 W2X7, Ireland.
Elavon Financial Services DAC, trading as Elavon Merchant Services, is regulated by the Central Bank of Ireland.
 
Elavon Financial Services 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.
Elavon Financial Services 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.

You can update the tip (gratuity) for a credit card transaction after the transaction is authorized. You will need to use the unique transaction identifier returned in the response to the original sale transaction.

You can also indicate if an online authorization should be performed for the tip adjust transaction.

:::::notice{note}

- This transaction is supported in the Service market segment.
- Tips are updated or added after the transaction has been processed, typically at the end of the day prior to Settlement.
- Tips can only be adjusted for credit card transactions.
:::::


## Code Sampl;es

### CWS

#### Request

| Property | Description |
| --- | --- |
| method string required | `tipAdjust` |
| requestId string required | Transaction Request ID |
| targetType string required | `paymentGatewayConverge` |
| parameters JSONObject required | All relevant parameters for Tip Adjust transactions. |
| paymentGatewayId string required | Payment Gateway ID Unique identifier of the payment gateway as returned in the openPaymentGateway transaction response. |
| originalTransId string required | Transaction ID Unique transaction identifier of the sale transaction. |
| verifyTipAdjustByIssuer boolean required | Indicates if an online authorization should be obtained for the tip adjust. If false, the tip adjust will get authorized when the transaction is settled. |
| gratuityAmount JSONObject required | The amount of the Tip Adjust transaction ```“gratuityAmount” : { “currencyCode” : “USD”, “value” : 200 }``` |


Start the transaction:

```json
{
 "method" : "tipAdjust",
 "requestId" : "832364634",
 "targetType" : "paymentGatewayConverge",
 "parameters" : {
 "paymentGatewayId" : "11b0032b-eb0d-4d9a-8664-eb430684cb92",
 "originalTransId" : "040316A15-F48AB876-9635-4933-B773-136888A3D972",
 "verifyTipAdjustByIssuer" : false,
 "gratuityAmount" : {
 "value" : 200,
 "currencyCode" : "USD"
 }
 }
}
```

Later to query the status of the transaction:

```json
{
 "method" : "getPaymentTransactionStatus",
 "requestId" : "832364635",
 "targetType" : "paymentGatewayConverge",
 "parameters" : {
 "paymentGatewayId" : "11b0032b-eb0d-4d9a-8664-eb430684cb92",
 "chanId" : "42b81c6a-f7eb-481c-bdff-0349cc84f296"
 }
}
```

#### Response

Initial response to tipAdjust request:

```json
{
 "requestId" : "832364634",
 "statusDetails" : "REQUEST_ACCEPTED",
 "data" : {
 "paymentGatewayCommand" : {
 "completed" : false,
 "eventQueue" : [],
 "chanId" : "42b81c6a-f7eb-481c-bdff-0349cc84f296"
 }
 }
}
```

Complete response:

```json
{
 "statusDetails" : "REQUEST_ACCEPTED",
 "requestId" : "832364635",
 "data" : {
 "paymentGatewayCommand" : {
 "completed" : true,
 "chanId" : "42b81c6a-f7eb-481c-bdff-0349cc84f296",
 "eventQueue" : [
 {
 "timeStamp" : "1645758897519",
 "statusDetails" : "TRANSACTION_QUERY_COMPLETE"
 },
 {
 "timeStamp" : "1645758897519",
 "statusDetails" : "STARTING"
 }
 ],
 "paymentTransactionData" : {
 "amountAuthorized" : {
 "value" : 700,
 "currencyCode" : "USD"
 },
 "gratuityAmount" : {
 "value" : 200,
 "currencyCode" : "USD"
 },
 "transactionType" : "TIP_ADJUST",
 "result" : "APPROVED",
 "tenderType" : "CARD",
 "approved" : "yes",
 "id" : "040316A15-F48AB876-9635-4933-B773-136888A3D972",
 "isFallback" : false,
 "errors" : []
 }
 }
 }
}
```

### Java

1. Initialize Commerce SDK and receive an `ECLAccountInterface` instance named account.
2. Create a money object by specifying a currency code and an amount.

 ```java
 ECLMoney amount = new ECLMoney(ECLCurrencyCode.USD, 200L);
 ```

3. Add the unique transaction identifier of the original sale transaction and create a transaction interface. Also specify if an online authorization should be obtained.

 ```java
 ECLTipAdjustTransactionInterface transaction = account.getTransactionProcessor().createTipAdjustTransaction(originalTxnId, amount, false);
 ```

4. Create a card tender interface.

 ```java
 ECLCardTenderInterfaceECLCardTenderInterface tender = account.getTransactionProcessor().createCardTender();
 ```

### Objective-C

1. Initialize Commerce SDK and receive an `ECLAccountProtocol` instance named account.
2. Create a money object by specifying a currency code and an amount.

 ```objc
 ECLMoney *amount = [[ECLMoney alloc] initWithMinorUnits:200 withCurrencyCode:ECLCurrencyCode_USD];
 ```

3. Add the unique transaction identifier of the original sale transaction and create a transaction protocol. Also specify if an online authorization should be obtained.

 ```objc
 id<ECLTipAdjustTransactionProtocol> transaction = [[_account transactionProcessor] createTipAdjustTransactionWithTotal:amount transactionID:originalTxnId verify:NO];
 ```

4. Create a card tender protocol.

 ```objc
 id<ECLCardTenderProtocol> tender = [[_account transactionProcessor] createCardTender];
 ```

### C\#

```c#
Money amount = new Money(Money.CurrencyCodefromString("USD"), myAmount);
bool verifyTipAdjustByIssuer = false;
 
m_CWS.StartTipAdjust(m_PaymentGatewayId, m_OriginalTransId, amount, verifyTipAdjustByIssuer, MyNotifyCWSEvent, MyPaymentComplete);
```

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