<!-- ZenPays documentation · https://docs.zenpayz.com/docs/rest-api/endpoints/chargebacks/bulk-upload-chargebacks -->

# Bulk Upload Chargebacks

Upload a CSV or Excel file to create multiple chargebacks in a single batch operation.

<EndpointHeader verb="POST" path="/merchant/api/v1/chargebacks/bulk" />

## Request

### Headers

<ParamTable
  label="Header"
  rows={[
    { name: "Authorization", required: true, desc: "`Bearer {api_key}`" },
    { name: "X-Signature", required: true, desc: "HMAC-SHA256 signature" },
    { name: "X-Timestamp", required: true, desc: "ISO 8601 timestamp" },
    { name: "X-Secret-Salt", required: true, desc: "Secret salt for HMAC validation" },
    { name: "Content-Type", required: true, desc: "`multipart/form-data`" },
    { name: "X-Merchant-Id", required: true, desc: "Merchant identifier" },
    { name: "X-Request-Id", required: true, desc: "Unique request identifier" },
  ]}
/>

### Body Parameters

<ParamTable
  rows={[
    { name: "file", type: "File", required: true, desc: "CSV or Excel file containing chargeback records (max 10MB)" },
    { name: "webhookUrl", type: "string", desc: "URL to receive a webhook notification when processing completes" },
  ]}
/>

### Accepted File Types

| MIME Type | Extension |
|-----------|-----------|
| `text/csv` | `.csv` |
| `application/vnd.ms-excel` | `.xls` |
| `application/vnd.openxmlformats-officedocument.spreadsheetml.sheet` | `.xlsx` |

## Response

### Success (200 OK)

```json
{
  "success": true,
  "data": {
    "batchId": "batch_a1b2c3d4e5f6g7h8",
    "status": "processing",
    "totalRecords": 150,
    "processedRecords": 0,
    "failedRecords": 0,
    "createdAt": "2024-01-15T10:30:00.000Z"
  },
  "message": "Bulk upload accepted for processing",
  "error": null,
  "meta": {
    "request_id": "req_xxxxx",
    "timestamp": "2024-01-15T10:30:00.000Z",
    "processing_time_ms": 120,
    "api_version": "v1",
    "endpoint": "POST /chargebacks/bulk",
    "user_type": "merchant"
  }
}
```

### Error Responses

<ErrorTable
  rows={[
    { code: "VALIDATION_ERROR", status: "400", message: "Invalid file format or missing required file" },
    { code: "UNAUTHORIZED", status: "401", message: "Invalid API key" },
    { code: "FILE_TOO_LARGE", status: "413", message: "File exceeds the 10MB size limit" },
    { code: "UNSUPPORTED_MEDIA_TYPE", status: "415", message: "File type is not CSV, XLS, or XLSX" },
  ]}
/>

<CodeRail>

## Examples

<Tabs groupId="language">
  <TabItem value="curl" label="cURL" default>

```bash
curl -X POST https://api.zenpayz.com/merchant/api/v1/chargebacks/bulk \
  -H "Authorization: Bearer zp_test_xxxxx" \
  -H "X-Timestamp: 2024-01-15T10:30:00.000Z" \
  -H "X-Signature: a1b2c3d4e5f6..." \
  -H "X-Secret-Salt: your_secret_salt" \
  -H "X-Merchant-Id: merch_xxxxx" \
  -H "X-Request-Id: req_xxxxx" \
  -F "file=@chargebacks.csv" \
  -F "webhookUrl=https://example.com/webhooks/bulk-status"
```

  </TabItem>
  <TabItem value="javascript" label="JavaScript">

```javascript
const formData = new FormData();
formData.append('file', fileInput.files[0]);
formData.append('webhookUrl', 'https://example.com/webhooks/bulk-status');

const response = await fetch('https://api.zenpayz.com/merchant/api/v1/chargebacks/bulk', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${apiKey}`,
    'X-Timestamp': timestamp,
    'X-Signature': signature,
    'X-Secret-Salt': secretSalt,
    'X-Merchant-Id': merchantId,
    'X-Request-Id': requestId,
  },
  body: formData,
});

const result = await response.json();
console.log(result.data.batchId); // "batch_a1b2c3d4e5f6g7h8"
console.log(result.data.status); // "processing"
```

  </TabItem>
  <TabItem value="sdk" label="SDK">

```javascript
const result = await zenpays.chargebacks.bulkUpload({
  file: fs.createReadStream('chargebacks.csv'),
  webhookUrl: 'https://example.com/webhooks/bulk-status',
});

console.log(result.batchId); // "batch_a1b2c3d4e5f6g7h8"
console.log(result.status); // "processing"
```

  </TabItem>
</Tabs>

</CodeRail>

## Related Endpoints

- [Bulk Upload Status](/docs/rest-api/endpoints/chargebacks/bulk-upload-status)
- [Create Chargeback](/docs/rest-api/endpoints/chargebacks/create-chargeback)
- [List Chargebacks](/docs/rest-api/endpoints/chargebacks/list-chargebacks)
