What's the complete proper way to check if BVN is valid or not

[olakunlevpn]

What's the complete proper way to check if BVN is valid or not because i have play around with the code and it seems not working

$paystack = new Yabacon\Paystack(Config::get('app.paystack_secret_key'));

try
{
$responseObj = $paystack->bank->resolveBvn([
'bvn' => '22395920708', // in kobo
]);

} catch (\Yabacon\Paystack\Exception\ApiException $e) {
print_r($e->getResponseObject());
die($e->getMessage());
}

if (http_response_code(200)) {
var_dump($responseObj);
}

the above code respond on the browser with the following error

stdClass Object ( [status] => [message] => Unable to resolve BVN ) Paystack Request failed with response: 'Unable to resolve BVN'

But we need to check if its valid or not and display some certain error to the user after inserting wrong BVN