> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://mezmo.ferndocs.com/api-reference/pipeline/processors/put-transform-group-transform-group-id-transform-transform-group-transform-id/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://mezmo.ferndocs.com/_mcp/server.

# Put Transform Group Transform Group Id Transform Transform Group Transform Id

PUT https://api.mezmo.com/v3/transform-group/{transform_group_id}/transform/{transform_group_transform_id}
Content-Type: application/json

Update a Processor in a Processor Group

Reference: https://mezmo.ferndocs.com/api-reference/pipeline/processors/put-transform-group-transform-group-id-transform-transform-group-transform-id

## Authentication

- `Authorization` header (required) (prefixed with ` Token  `) — Header authentication of the form `Token <token>`

## Request

### Path parameters

- `transform_group_id` (string, required)
- `transform_group_transform_id` (string, required)

### Body (application/json)

This endpoint expects an object.

- `type` (enum, required)
  - Allowed values: `filter`, `sample`, `drop-fields`, `parse`, `parse-sequentially`, `route`, `stringify`, `compact-fields`, `flatten-fields`, `dedupe`, `encrypt-fields`, `decrypt-fields`, `js-script`, `unroll`, `vrl`, `reduce`, `map-fields`, `metrics-tag-cardinality-limit`, `aggregate`, `event-to-metric`, `clustering`, `redact`, `throttle`, `set-timestamp`, `data-profiler`, `replace`, `trace-sampling`
- `title` (string, required)
- `user_config` (TransformGroupTransformGroupIdTransformTransformGroupTransformIdPutRequestBodyContentApplicationJsonSchemaUserConfig, required)
- `generation_id` (integer, required)
- `deploy_type` (enum, optional, default: saas)
  - Allowed values: `saas`, `local`
- `description` (string, optional, nullable)
- `inputs` (list of string, optional) — A list of inputs for the given transform. Typically this is empty when creating a new transform via the UI, but is leveraged by the terraform provider when managing pipeline state.

## Response

### 200

Default Response

## Types

### TransformGroupTransformGroupIdTransformTransformGroupTransformIdPutRequestBodyContentApplicationJsonSchemaUserConfig

## Examples

**Request**

```json
{
  "type": "filter",
  "title": "string",
  "generation_id": 1
}
```

**Response**

```json
{}
```

**SDK Code**

```python
import requests

url = "https://api.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id"

payload = {
    "type": "filter",
    "title": "string",
    "generation_id": 1
}
headers = {
    "Authorization": "Token <pipeline-service-key>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id';
const options = {
  method: 'PUT',
  headers: {
    Authorization: 'Token <pipeline-service-key>',
    'Content-Type': 'application/json'
  },
  body: '{"type":"filter","title":"string","generation_id":1}'
};

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.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id"

	payload := strings.NewReader("{\n  \"type\": \"filter\",\n  \"title\": \"string\",\n  \"generation_id\": 1\n}")

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

	req.Header.Add("Authorization", "Token <pipeline-service-key>")
	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.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Token <pipeline-service-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"type\": \"filter\",\n  \"title\": \"string\",\n  \"generation_id\": 1\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.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id")
  .header("Authorization", "Token <pipeline-service-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"type\": \"filter\",\n  \"title\": \"string\",\n  \"generation_id\": 1\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id', [
  'body' => '{
  "type": "filter",
  "title": "string",
  "generation_id": 1
}',
  'headers' => [
    'Authorization' => 'Token <pipeline-service-key>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id");
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "Token <pipeline-service-key>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"type\": \"filter\",\n  \"title\": \"string\",\n  \"generation_id\": 1\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Token <pipeline-service-key>",
  "Content-Type": "application/json"
]
let parameters = [
  "type": "filter",
  "title": "string",
  "generation_id": 1
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mezmo.com/v3/transform-group/transform_group_id/transform/transform_group_transform_id")! 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()
```