## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://developers.criteo.com/llms.txt)

Use this file to discover all available pages before exploring further.

### PUT /2026-01/retail-media/campaigns/{campaignId}

#### cURL

```bash
curl --request PUT \
  --url https://api.criteo.com/2026-01/retail-media/campaigns/{campaignId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{}'
```

#### Python

```python
import requests

url = "https://api.criteo.com/2026-01/retail-media/campaigns/{campaignId}"

payload = {}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.text)
```

#### JavaScript (Fetch)

```javascript
const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://api.criteo.com/2026-01/retail-media/campaigns/{campaignId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

#### PHP

```php
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.criteo.com/2026-01/retail-media/campaigns/{campaignId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
?>
```

#### Go

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

url := "https://api.criteo.com/2026-01/retail-media/campaigns/{campaignId}"

payload := strings.NewReader("")

req, _ := http.NewRequest("PUT", url, payload)

req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

fmt.Println(string(body))
}
```

#### Response Example

```json
{
  "data": {
    "id": "<string>",
    "type": "<string>",
    "attributes": {
      "accountId": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "isAutoDailyPacing": true,
      "name": "<string>",
      "updatedAt": "2023-11-07T05:31:56Z",
      "budget": 123,
      "budgetRemaining": 123,
      "budgetSpent": 123,
      "clickAttributionWindow": "30D",
      "companyName": "<string>",
      "dailyPacing": 123,
      "drawableBalanceIds": [
        "<string>"
      ],
      "endDate": "2023-11-07T05:31:56Z",
      "monthlyPacing": 123,
      "onBehalfCompanyName": "<string>",
      "promotedBrandIds": [
        "<string>"
      ],
      "retailerId": 123,
      "startDate": "2023-11-07T05:31:56Z",
      "type": "auction",
      "viewAttributionWindow": "none"
    }
  },
  "errors": [
    {
      "code": "<string>",
      "detail": "<string>",
      "instance": "<string>",
      "source": {},
      "stackTrace": "<string>",
      "title": "<string>",
      "traceId": "<string>"
    }
  ],
  "warnings": [
    {
      "code": "<string>",
      "detail": "<string>",
      "instance": "<string>",
      "source": {},
      "stackTrace": "<string>",
      "title": "<string>",
      "traceId": "<string>"
    }
  ]
}
```

### Authorizations

- **Authorization**: A string in the header required to access the API, obtained through the OAuth 2.0 flow.

### Path Parameters

- **campaignId**: A required string indicating the specific campaign ID.

### Body

**application/json**: A JSON object representing the campaign settings for the update.

### Response

**200 - application/json**: A successful response indicating the updated campaign data in JSON format.