# Reverse

## Overview

The `reverse` method cancels a captured payment before settlement.

## Request Fields

| Field                    | Type   | Required | Description          |
| ------------------------ | ------ | -------- | -------------------- |
| `merchantReverseId`      | String | Yes      | Reverse operation ID |
| `connectorTransactionId` | String | Yes      | Transaction ID       |
| `cancellationReason`     | String | No       | Reason               |

## Response Fields

| Field    | Type          | Description      |
| -------- | ------------- | ---------------- |
| `status` | PaymentStatus | VOIDED, REVERSED |

## Example

```java
Map<String, Object> request = new HashMap<>();
request.put("merchantReverseId", "reverse_001");
request.put("connectorTransactionId", "pi_xxx");
request.put("cancellationReason", "Duplicate charge");

Map<String, Object> response = paymentClient.reverse(request);
```