Unable To Create New Virtual Card Using PHP

I am trying to create a visual Card but here’s the error I’m getting:
Cannot POST /v3/virtual-cards/trnsfers/166948/retries

Here’s my Sample code:

`<?php

$curl = curl_init();
$userdata = array(
    "currency" => "USD",
    "amount" => "200",
    "debit_currency" => "USD",
    "billing_name" => "John Doe",
    "billing_address" => " Enugu, Nigeria",

    "billing_city" => "Enugu",
    "billing_state" => "Enugu",
    "billing_country" => "Nigeria",

    "billing_postal_code" => "400106",
    "callback_url" => "localhost",

);
curl_setopt_array($curl, array(
    CURLOPT_URL => "https://api.flutterwave.com/v3/virtual-cards/trnsfers/166948/retries",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode($userdata),
  CURLOPT_HTTPHEADER => array(
  "Authorization: Bearer FLWSECK_TEST-SANDBOXDEMOKEY-X",
    "Content-Type: application/json"
  ),
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;`

Hi @obi_ekene your request is invalid. please kindly go through the docs and ensure you have all the required parameters added to the request.

Best Regards