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# Verify a PAN with Liquify

POST https://a7.liquifyfin-uat.in/v1/pan-verifications
Content-Type: application/json

Liquify verifies the PAN with its KYC providers. A PAN Liquify already verified is answered
from Liquify's own record (`reused: true`) and no provider is called. Pass the returned
`verification_id` to `POST /v1/customers`.


Reference: https://docs.liquifyfin.in/api-reference/liquify-vendor-api/customer-onboarding/verify-pan

## Authentication

- `Authorization` header (bearer token, required) — The token Liquify issued your organisation. Shown once; rotate it from Liquify if it is exposed.

## Request

### Body (application/json)

This endpoint expects a PanVerificationRequest.

- `pan` (string, required)

## Response

### 200

The verification.

- `data` (PanVerification, required)
- `meta` (Meta, required)

## Errors

### 400 Bad Request Error

`VALIDATION_FAILED` — the request breaks a rule in this spec.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

### 401 Unauthorized Error

`AUTH_INVALID_TOKEN` — no token, an unknown token, or your access is switched off.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

### 403 Forbidden Error

`ACCESS_DENIED` — this API is not switched on for you; `CONSENT_REQUIRED` — the customer has not granted (or withdrew) a purpose this call needs.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

### 422 Unprocessable Entity Error

`KYC_REQUIRED` — not an individual's PAN, under 18, or the PAN did not verify; `MF_SYNC_CONTACT_NOT_LINKED` — the folios are registered to another e-mail or mobile.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

### 429 Too Many Requests Error

Rate limited. Liquify's limits answer a problem (`MF_SYNC_RATE_LIMITED` is the customer's sync cooldown); the edge's per-caller limit answers with NO body. Either way, wait `Retry-After` seconds.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

### 503 Service Unavailable Error

`PROVIDER_UNAVAILABLE` / `MF_SYNC_PROVIDER_UNAVAILABLE` — a provider did not answer. Retry after `Retry-After` seconds.

- `type` (string, required) — `about:blank` — `code` carries the meaning.
- `title` (string, required)
- `status` (integer, required)
- `detail` (string, optional)
- `instance` (string, optional)
- `code` (string, optional)
- `errors` (list of string, optional) — One entry per field that failed validation.
- `request_id` (string, optional) — Quote it to Liquify support.
- `trace_id` (string, optional)

## Types

### PanVerification

- `verification_id` (string, required) — What `POST /v1/customers` takes.
- `valid` (boolean, required)
- `reused` (boolean, required) — Liquify already held a valid verification of this PAN; no provider was called.
- `individual` (boolean, optional, nullable)
- `name_as_per_pan` (string, optional, nullable)
- `dob` (date, optional, nullable)
- `gender` (enum, optional)
  - Allowed values: `M`, `F`, `T`
- `category` (string, optional, nullable)

### Meta

- `request_id` (string, required) — Ties a call to Liquify's records; quote it to support.
- `ts` (datetime, required)

## Examples

**Request**

```json
{
  "pan": "ABCPE1234F"
}
```

**Response**

```json
{
  "data": {
    "verification_id": "string",
    "valid": true,
    "reused": true,
    "individual": true,
    "name_as_per_pan": "string",
    "dob": "2023-01-15",
    "gender": "M",
    "category": "string"
  },
  "meta": {
    "request_id": "string",
    "ts": "2024-01-15T09:30:00Z"
  }
}
```

**SDK Code**

```python
import requests

url = "https://a7.liquifyfin-uat.in/v1/pan-verifications"

payload = { "pan": "ABCPE1234F" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://a7.liquifyfin-uat.in/v1/pan-verifications';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"pan":"ABCPE1234F"}'
};

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://a7.liquifyfin-uat.in/v1/pan-verifications"

	payload := strings.NewReader("{\n  \"pan\": \"ABCPE1234F\"\n}")

	req, _ := http.NewRequest("POST", 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://a7.liquifyfin-uat.in/v1/pan-verifications")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"pan\": \"ABCPE1234F\"\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.post("https://a7.liquifyfin-uat.in/v1/pan-verifications")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"pan\": \"ABCPE1234F\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://a7.liquifyfin-uat.in/v1/pan-verifications', [
  'body' => '{
  "pan": "ABCPE1234F"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://a7.liquifyfin-uat.in/v1/pan-verifications");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"pan\": \"ABCPE1234F\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = ["pan": "ABCPE1234F"] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://a7.liquifyfin-uat.in/v1/pan-verifications")! 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()
```