> ## Documentation Index
> Fetch the complete documentation index at: https://docs.eximpe.com/llms.txt
> Use this file to discover all available pages before exploring further.

# REFUND FAILED

> Technical reference for the REFUND_FAILED webhook event, including payload schema, field specifications, and implementation details.

## Event Overview

**Event Type**: `REFUND_FAILED`\
**Category**: Payment\
**Description**: Refund could not be completed

This webhook is triggered when a refund fails to process or its final status could not be confirmed through EximPe.

***

## Delivery Details

| Attribute        | Value                                                                 |
| ---------------- | --------------------------------------------------------------------- |
| **HTTP method**  | `POST`                                                                |
| **URL**          | The webhook URL configured on your merchant account's API credentials |
| **Content-Type** | `application/json`                                                    |
| **Timeout**      | 10 seconds                                                            |
| **Retries**      | Up to 5 delivery attempts (backoff: 1 min, 5 min, 15 min, 60 min)     |

### Headers

| Header                | Description                                                                                                                                   |
| --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- |
| `Content-Type`        | `application/json`                                                                                                                            |
| `User-Agent`          | `Eximpe-Webhook/1.0`                                                                                                                          |
| `X-Webhook-Event`     | `REFUND_FAILED`                                                                                                                               |
| `X-Webhook-Timestamp` | Unix timestamp (string) at the time of the request                                                                                            |
| `X-Webhook-Signature` | HMAC-SHA256 signature of the request body (JSON string with keys sorted, no extra whitespace), using your API key as the secret. Hex-encoded. |

**Signature verification (recommended):**\
Compute `HMAC-SHA256(encryption_key, raw_body)` where `raw_body` is the exact UTF-8 request body as received. Compare the hex result with the `X-Webhook-Signature` header to ensure the webhook is from the platform and unchanged.

***

## Payload Schema

<CodeGroup>
  ```json Example Payload theme={null}
  {
      "data": {
          "refunds": [
              {
                  "bank_arn": null,
                  "comments": "Refund failed or status unknown",
                  "order_id": "OD3391756028",
                  "refund_id": "RF4762038159",
                  "payment_id": "PR6018394572",
                  "refund_amount": 1499,
                  "order_reference_id": "REF3391756028",
                  "refund_completed_at": null,
                  "refund_reference_id": "e6b2a9c4d1f847b3a8e2c5d9f0a7b1c6"
              }
          ]
      },
      "version": "2.0.0",
      "event_time": "2026-06-03T14:30:02.854654",
      "event_type": "REFUND_FAILED",
      "sequence_number": "c5d9e203-8a41-4f7b-bf62-913e07ad4c18"
  }
  ```
</CodeGroup>

## Field Specifications

<Tabs>
  <Tab title="Root Level Fields">
    <ParamField path="event_type" type="string" required>
      Always `"REFUND_FAILED"` for this webhook event
    </ParamField>

    <ParamField path="event_time" type="string" required>
      Timestamp when the event occurred in ISO 8601 format

      **Example**: `"2026-06-03T14:30:02.854654"`
    </ParamField>

    <ParamField path="version" type="string" required>
      Webhook payload version (currently "2.0.0")
    </ParamField>

    <ParamField path="sequence_number" type="string" required>
      Unique identifier for the event instance

      **Example**: `"c5d9e203-8a41-4f7b-bf62-913e07ad4c18"`
    </ParamField>

    <ParamField path="data" type="object" required>
      Event-specific data payload containing refund details
    </ParamField>
  </Tab>

  <Tab title="Data Object Fields">
    <ParamField path="data.refunds" type="array" required>
      Array of refund objects containing the failed refund information
    </ParamField>

    <ParamField path="data.refunds[].order_id" type="string" required>
      Order ID associated with the refund

      **Example**: `"OD3391756028"`
    </ParamField>

    <ParamField path="data.refunds[].refund_id" type="string" required>
      Unique refund identifier

      **Example**: `"RF4762038159"`
    </ParamField>

    <ParamField path="data.refunds[].payment_id" type="string" required>
      Original payment ID that the refund was attempted against

      **Example**: `"PR6018394572"`
    </ParamField>

    <ParamField path="data.refunds[].refund_amount" type="number" required>
      Refund amount that failed to process

      **Example**: `1499`
    </ParamField>

    <ParamField path="data.refunds[].comments" type="string">
      Human-readable reason describing why the refund failed or could not be confirmed

      **Example**: `"Refund failed or status unknown"`
    </ParamField>

    <ParamField path="data.refunds[].bank_arn" type="string">
      Bank ARN (Acquirer Reference Number) - `null` when the refund did not reach the bank

      **Example**: `null`
    </ParamField>

    <ParamField path="data.refunds[].order_reference_id" type="string">
      Your reference ID for the order associated with the refund

      **Example**: `"REF3391756028"`
    </ParamField>

    <ParamField path="data.refunds[].refund_completed_at" type="string">
      Timestamp when the refund completed - `null` for a failed refund

      **Example**: `null`
    </ParamField>

    <ParamField path="data.refunds[].refund_reference_id" type="string">
      Unique reference ID for this refund transaction

      **Example**: `"e6b2a9c4d1f847b3a8e2c5d9f0a7b1c6"`
    </ParamField>
  </Tab>
</Tabs>