curl --request POST \
  --url https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants \
  --header 'Content-Type: application/json' \
  --header 'authorization: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "enrolment_number": "292200000001ES9"
}
'

import requests

url = "https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants"

payload = { "enrolment_number": "292200000001ES9" }
headers = {
    "authorization": "<api-key>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    authorization: '<api-key>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({enrolment_number: '292200000001ES9'})
};

fetch('https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'enrolment_number' => '292200000001ES9'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "authorization: <api-key>",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants"

	payload := strings.NewReader("{\n  \"enrolment_number\": \"292200000001ES9\"\n}")

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

	req.Header.Add("authorization", "<api-key>")
	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants")
  .header("authorization", "<api-key>")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"enrolment_number\": \"292200000001ES9\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.co.in/gst/compliance/public/unregistered-applicants")

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

request = Net::HTTP::Post.new(url)
request["authorization"] = '<api-key>'
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"enrolment_number\": \"292200000001ES9\"\n}"

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

{
  "code": 200,
  "data": {
    "data": {
      "name": "Dev Prakruthi",
      "pan": "SRIFP2884S",
      "state": "Tamil Nadu",
      "authstatus": "A",
      "regdt": "28/09/1989",
      "candt": "",
      "addtls": {
        "bno": "3/1-10",
        "bnm": "",
        "st": "3rd Street",
        "loc": "West Mambalam",
        "pncd": "600033",
        "stcd": "Tamil Nadu",
        "lg": "13.035805",
        "lt": "80.2204520000001",
        "dst": "Chennai",
        "cnty": "IND",
        "landMark": "West Mambalam Sub Post Office",
        "city": "Chennai"
      },
      "goodsdetails": "",
      "servicedetails": ""
    },
    "status_cd": "1"
  },
  "timestamp": 1785424627417,
  "transaction_id": "f8be2d24-ed85-4a65-9763-0a3bef00870a"
}