public function void_partial_transactions()
 {
     $void_success = true;
     if ($partial_transactions = $this->sales_controller->sale_lib->get_partial_transactions()) {
         $service_url = (!defined("ENVIRONMENT") or ENVIRONMENT == 'development') ? 'https://hc.mercurydev.net/tws/transactionservice.asmx?WSDL' : 'https://hc.mercurypay.com/tws/transactionservice.asmx?WSDL';
         foreach ($partial_transactions as $partial_transaction) {
             $parameters = array('request' => $partial_transaction, 'password' => $this->sales_controller->Location->get_info_for_key('merchant_password'));
             $client = new SoapClient($service_url, array('trace' => TRUE));
             $result = $client->CreditReversalToken($parameters);
             $status = $result->CreditReversalTokenResult->Status;
             if ($status != 'Approved') {
                 unset($parameters['AcqRefData']);
                 unset($parameters['ProcessData']);
                 $result = $client->CreditVoidSaleToken($parameters);
                 $status = $result->CreditVoidSaleTokenResult->Status;
                 if ($status != 'Approved') {
                     $void_success = false;
                 }
             }
         }
     }
     return $void_success;
 }