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# Validate a transformation

POST https://example.itential.io/transformations/validate
Content-Type: application/json

Validates an entire transformation without saving it. Covers the same checks that create and import perform, and also finds issues that pass those checks but cause errors downstream, such as missing or duplicate function names, duplicate incoming or outgoing schema IDs, function objects missing their own functions array, and excessively nested function trees. Returns every validation issue found rather than stopping at the first one.

Reference: https://docs.itential.com/itential-cloud/api-reference/transformations/jst-deep-validate-transformation

## Authentication

- `Authorization` header (basic auth, required) — Basic authentication of the form `Basic <base64(username:password)>`.

## Response

### 200

Validation result: \{ isValid, errors, warnings }

- `isValid` (boolean, optional) — Whether the transformation passed every deep-validation check.
- `errors` (list of TransformationsValidatePostResponsesContentApplicationJsonSchemaErrorsItems, optional) — Errors found, each shaped \{ code, message, path }. Empty when isValid is true.
- `warnings` (list of TransformationsValidatePostResponsesContentApplicationJsonSchemaWarningsItems, optional) — Non-blocking issues found, each shaped \{ code, message, path }.

## Errors

### 500 Internal Server Error

Error response from API

- `any`

## Types

### TransformationsValidatePostResponsesContentApplicationJsonSchemaErrorsItems

- `code` (string, optional)
- `message` (string, optional)
- `path` (string, optional)

### TransformationsValidatePostResponsesContentApplicationJsonSchemaWarningsItems

- `code` (string, optional)
- `message` (string, optional)
- `path` (string, optional)

## Examples

**Request**

```json
{}
```

**Response**

```json
{
  "isValid": true,
  "errors": [
    {
      "code": "string",
      "message": "string",
      "path": "string"
    }
  ],
  "warnings": [
    {
      "code": "string",
      "message": "string",
      "path": "string"
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://example.itential.io/transformations/validate"

payload = {}
headers = {"Content-Type": "application/json"}

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

print(response.json())
```

```javascript
const url = 'https://example.itential.io/transformations/validate';
const options = {method: 'POST', headers: {'Content-Type': 'application/json'}, body: '{}'};

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://example.itential.io/transformations/validate"

	payload := strings.NewReader("{}")

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

	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://example.itential.io/transformations/validate")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{}"

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.post("https://example.itential.io/transformations/validate")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://example.itential.io/transformations/validate', [
  'body' => '{}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://example.itential.io/transformations/validate");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = [] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://example.itential.io/transformations/validate")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
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()
```