> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.jambonz.org/reference/rest-platform-management/call-routing/update-least-cost-routing-route/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.jambonz.org/_mcp/server.

# update least cost routing route

PUT https://api.jambonz.cloud/v1/LcrRoutes/{LcrRouteSid}
Content-Type: application/json

Reference: https://docs.jambonz.org/reference/rest-platform-management/call-routing/update-least-cost-routing-route

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `LcrRouteSid` (string, required)

### Body (application/json)

This endpoint expects a LcrRoute.

- `lcr_sid` (string, required)
- `regex` (string, required) — out going call Phone number regex
- `priority` (integer, required)
- `description` (string, optional)

## Response

### 204

least cost routing route updated

## Errors

### 400 Bad Request Error

bad request

- `msg` (string, required)

### 404 Not Found Error

least cost routing route not found

- `any`

### 500 Internal Server Error

system error

- `msg` (string, required)

## Examples

**Request**

```json
{
  "lcr_sid": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
  "regex": "^\\+1[2-9]\\d{9}$",
  "priority": 10,
  "description": "Route for US numbers with priority 10"
}
```

**Response**

```json
{}
```

**SDK Code**

```python
import requests

url = "https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid"

payload = {
    "lcr_sid": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
    "regex": "^\+1[2-9]\d{9}$",
    "priority": 10,
    "description": "Route for US numbers with priority 10"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid';
const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"lcr_sid":"a1b2c3d4-5678-90ab-cdef-1234567890ab","regex":"^\\+1[2-9]\\d{9}$","priority":10,"description":"Route for US numbers with priority 10"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid"

	payload := strings.NewReader("{\n  \"lcr_sid\": \"a1b2c3d4-5678-90ab-cdef-1234567890ab\",\n  \"regex\": \"^\\\\+1[2-9]\\\\d{9}$\",\n  \"priority\": 10,\n  \"description\": \"Route for US numbers with priority 10\"\n}")

	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(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"lcr_sid\": \"a1b2c3d4-5678-90ab-cdef-1234567890ab\",\n  \"regex\": \"^\\\\+1[2-9]\\\\d{9}$\",\n  \"priority\": 10,\n  \"description\": \"Route for US numbers with priority 10\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.put("https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"lcr_sid\": \"a1b2c3d4-5678-90ab-cdef-1234567890ab\",\n  \"regex\": \"^\\\\+1[2-9]\\\\d{9}$\",\n  \"priority\": 10,\n  \"description\": \"Route for US numbers with priority 10\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid', [
  'body' => '{
  "lcr_sid": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
  "regex": "^\\\\+1[2-9]\\\\d{9}$",
  "priority": 10,
  "description": "Route for US numbers with priority 10"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid");
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"lcr_sid\": \"a1b2c3d4-5678-90ab-cdef-1234567890ab\",\n  \"regex\": \"^\\\\+1[2-9]\\\\d{9}$\",\n  \"priority\": 10,\n  \"description\": \"Route for US numbers with priority 10\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [
  "lcr_sid": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
  "regex": "^\+1[2-9]\d{9}$",
  "priority": 10,
  "description": "Route for US numbers with priority 10"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.jambonz.cloud/v1/LcrRoutes/LcrRouteSid")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```