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# List lineage of a report element

GET https://api.sigmacomputing.com/v2/reports/{reportId}/lineage/elements/{elementId}

This endpoint retrieves the lineage and dependencies of a specific report element. It provides a detailed view of how data is interconnected within a report, which can be critical for understanding data sources and dependencies.

### Usage notes

* **reportId:** The UUID of the report containing the element. Retrieve the **reportId** by calling the [/v2/reports](https://help.sigmacomputing.com/reference/list-reports) endpoint.
* **elementId:** The UUID of the element within the report whose lineage is being queried. Retrieve the **elementId** by first calling the [/v2/reports/\{reportId}/pages](listreportpages) endpoint, then calling the [/v2/reports/\{reportId}/pages/\{pageId}/elements](listreportpageelements) endpoint.
* The element that you request must be a data element, such as a table, pivot table, or visualization. Requesting a UI or control element returns an error.

### Usage scenarios

* **Data governance:** Allows data managers to track how information is used and propagated through different report elements.
* **Debugging and optimization:** Helps in identifying and resolving issues in data processing or in the structure of report setups.
* **Data source management**: Identify the data sources in use in a specific report.

### Best practices

* Use this endpoint to regularly audit report structures, ensuring that all data connections and transformations are correct and optimized.
* Integrate this information into documentation or data dictionaries to enhance transparency and understanding across teams.

Reference: https://help.sigmacomputing.com/reference/list-report-element-lineage

## Authentication

- OAuth2 — send the obtained token as `Authorization: Bearer <token>`

## Servers

- `https://api.sigmacomputing.com` (Server for GCP (US) hosted organizations, default)
- `https://api.sa.gcp.sigmacomputing.com` (Server for GCP (KSA) hosted organizations)
- `https://aws-api.sigmacomputing.com` (Server for AWS US (West) hosted organizations)
- `https://api.us-a.aws.sigmacomputing.com` (Server for AWS US (East) hosted organizations)
- `https://api.ca.aws.sigmacomputing.com` (Server for AWS Canada hosted organizations)
- `https://api.eu.aws.sigmacomputing.com` (Server for AWS Europe hosted organizations)
- `https://api.au.aws.sigmacomputing.com` (Server for AWS Australia and APAC hosted organizations)
- `https://api.uk.aws.sigmacomputing.com` (Server for AWS UK hosted organizations)
- `https://api.us.azure.sigmacomputing.com` (Server for Azure US hosted organizations)
- `https://api.eu.azure.sigmacomputing.com` (Server for Azure Europe hosted organizations)
- `https://api.ca.azure.sigmacomputing.com` (Server for Azure Canada hosted organizations)
- `https://api.uk.azure.sigmacomputing.com` (Server for Azure United Kingdom hosted organizations)
- `https://api.au.azure.sigmacomputing.com` (Server for Azure Australia hosted organizations)

## Request

### Path parameters

- `reportId` (string, required) — Unique identifier of the report.
- `elementId` (string, required) — Unique identifier of the element

## Response

### 200

The response body.

- `dependencies` (map from string to object or object or object or object, required)
  - Element details
    - `nodeId` (string, required)
    - `type` (string, required)
  - Sheet details
    - `nodeId` (string, required)
    - `type` (string, required)
    - `name` (string, required)
    - `elementId` (string, required)
  - Data source details
    - `nodeId` (string, required)
    - `type` (string, required)
    - `name` (string, required)
  - Semantic view details
    - `nodeId` (string, required)
    - `type` (string, required)
    - `name` (string, required)
    - `semanticViewTable` (string, required)
- `edges` (list of object, required)
  - `source` (string, required)
  - `target` (string, required)
  - `type` (enum, required)
    - Allowed values: `lookup`, `source`, `dependency`

## Examples

**Response**

```json
{
  "dependencies": {},
  "edges": [
    {
      "source": "string",
      "target": "string",
      "type": "lookup"
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId"

headers = {"Authorization": "<token>."}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId';
const options = {method: 'GET', headers: {Authorization: '<token>.'}};

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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "<token>.")

	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.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = '<token>.'

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.get("https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId")
  .header("Authorization", "<token>.")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId', [
  'headers' => [
    'Authorization' => '<token>.',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "<token>.");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "<token>."]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.sigmacomputing.com/v2/reports/reportId/lineage/elements/elementId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

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()
```