SoapFault异常：[soap：Server]索引：1，大小：php中有1个错误

Question

我正在尝试使用SOAP从API服务获取数据。除数据外，其他工作正常。 这是代码

$body=array(
             'Origin' => 'BOM',
            'Destination' => 'DEL',
            'DepartDate' => '2013-09-05',
            'ReturnDate' => '2013-09-06',
            'AdultPax' => '1',
            'ChildPax' => '0',
            'InfantPax' => '0',
            'Currency' => 'INR',
            'Clientid' => 'XXX',
            'Clientpassword' => '*4X',
            'Clienttype' => 'XXXX',
            'Preferredclass' => 'E',
            'mode' => 'ONE',
            'PreferredAirline' => 'AI,G8,IC,6E,9W,S2,IT,9H,I7,SG');

用于执行SOAP的Php代码

 $location_URL='http://59.162.33.102/ArzooWS/services/DOMFlightAvailability?wsdl';
$client = new SoapClient('http://59.162.33.102/ArzooWS/services/DOMFlightAvailability?wsdl');
try
{   
    print_r($client->__getFunctions());
   $result = $client->__call('getAvailability',$body);
   print_r($result);
}catch(Exception $e){
    echo $e;
}

print_r($client->__getFunctions())返回getAvailability的结果，当尝试获取数据时，我将获得异常

SoapFault exception: [soap:Server] Index: 1, Size: 1 in C:\xampp\htdocs\apihack\index.php:80 Stack trace: #0 C:\xampp\htdocs\apihack\index.php(80): SoapClient->__call('getAvailability', Array) #1 {main}