use SOAP::Lite;
my $client = SOAP::Lite->new;
$client->soapversion('1.1');

my $code = $client->service($WSDL_URL);
my $result = $code->someMethod( $someParam );

##</code><code>##

Possible SOAP version mismatch: Envelope namespace http://schemas.xmlsoap.org/wsdl/soap/ was unexpected. Expecting http://schemas.xmlsoap.org/soap/envelope/.

##</code><code>##

my $soap = SOAP::Lite
         ->uri($uri)
         ->proxy($proxy)
         ->on_action( sub { return $uri . '/' . $method } );

my $result = $soap->$method( SOAP::Data->name( someParam => $some_value ) );

##</code><code>##

use SOAP::Lite ( +trace => 'all', readable => 1, outputxml => 1, );