CURL DPD UK, API DPD UK Opcje

[casperii]

Witam,
próbuje się połączyć z DPD UK i pobrać informację o przesyłce.
Mój kod:

[PHP] pobierz, plaintext 
$url = "https://apps.geopostuk.com/trackingcore/ie/parcels";
$xml = '<?xml version="1.0" encoding="UTF-8"?>
<trackingrequest>
 <user>user</user>
 <password>password</password>
 <trackingnumbers>
 <trackingnumber>XXXX</trackingnumber>
 </trackingnumbers>
</trackingrequest>
</xml>';
 
$handle = 'output.xml';
$handle = fopen($handle, 'w');
fwrite($handle, $xml);
$post_data['xml'] = $handle;
 
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "".$url."" );
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST" );
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
					"Content-Type: application/xml; charset=UTF-8",
                    "Accept: application/xml; charset=UTF-8",
                    "Authorization: Basic ". base64_encode("user:password") ."",
                    "GEOClient: account/number",
					"trackingnumbers:XXXXX",
                    "Content-Length: ".$handle.""
					));
$response = curl_exec($ch);
 
if (curl_errno($ch)) {
	print curl_error($ch);
}
curl_close($ch);
$result    = json_decode($response);
echo var_dump($response);
[PHP] pobierz, plaintext 

Natomiast serwer zwraca mi: Client sent a bad request.
Gdyby jednak ktoś chciał zajrzeć w dokumentacje DPD UK:

Server: ftp.geopostuk.com
User: edidev
Password: acy7bies