fails to parse the soap request

I am new to this module and unsure how to call the remote method.
However, when it fails to parse the soap request and I don't know why
it happened.
Any helps are much appreciated!

Error parsing the incoming request
Linked cause: The processing instruction target matching
"[xX][mM][lL]" is not allowed.
The wsdl looks like this












------------------------------Below is the code

use SOAP::Lite +trace;
my $soap =
SOAP::Lite->uri('$myTargetNamespace')->proxy('$myProxyServer ');
my $loginElement = SOAP::Data->name('login')->value('myid');
my $pwdElement = SOAP::Data->name('password')->value('mypwd!');
my $domainElement = SOAP::Data->name('companyDomain')->value('mycom');
my $authenticationElementType =
SOAP::Data->value($loginElement,$pwdElement,$domainElement);
my $authenticationElement = SOAP::Data->name
('authentication')->value($authenticationElementType);
my $uniqueIDElement = SOAP::Data->name('uniqueID')->value('myemail');
my @params = ($authenticationElement, $uniqueIDElement);
print $result=$soap->call('myGetUserById' =>
SOAP::Data->name('myGetUserByIdRequest')
->type('userProfileRequestType')
->value([@params])
);

The output is as following:
1SOAP::Transport::new: ()
SOAP::Serializer::new: ()
SOAP::Deserializer::new: ()
SOAP::Parser::new: ()
SOAP::Lite::new: ()
SOAP::Transport::HTTP::Client::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Lite::call: ()
SOAP::Serializer::envelope: ()
SOAP::Serializer::envelope: myGetUserById SOAP::Data=HASH(0x1a60cf0)
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Data::new: ()
SOAP::Transport::HTTP::Client::send_receive:
HTTP::Request=HASH(0x1bc4258)
SOAP::Transport::HTTP::Client::send_receive: POST $myProxyServer
Accept: text/xml
Accept: multipart/*
Content-Length: 895
Content-Type: text/xml; charset=utf-8
SOAPAction: "$myTargetNamespace#myGetUserById"


xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:namesp2="http://namespaces.soaplite.com/perl"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsd="http://www.w3.org/1999/XMLSchema"
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/enco ding/">
xmlns:namesp1="$myTargetNamespace">
SOAP-ENC:arrayType="xsd:string[4]">
myid
mypwd
mycom
xsi:type="xsd:string">myemail

SOAP::Transport::HTTP::Client::send_receive:
HTTP::Response=HASH(0x1d6f248)
SOAP::Transport::HTTP::Client::send_receive: HTTP/1.1 200 OK
Connection: close
Date: Fri, 28 Apr 2006 21:14:24 GMT
Server: Apache-Coyote/1.1
Content-Length: 384
Content-Type: text/xml;charset=utf-8
Client-Date: Fri, 28 Apr 2006 21:14:24 GMT
Client-Peer: 10.5.11.72:7052
Client-Response-Num: 1
SOAPAction: ""

xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">

SOAP-ENV:UserProfileWebService
Error parsing the incoming request
Linked cause: The processing instruction target matching
"[xX][mM][lL]" is not allowed.

SOAP::Deserializer::deserialize: ()
SOAP::Parser::decode: ()
SOAP::SOM::new: ()
SOAP::Lite::DESTROY: ()
SOAP::Deserializer::DESTROY: ()
SOAP::Parser::DESTROY: ()
SOAP::Serializer::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Transport::DESTROY: ()
SOAP::Transport::HTTP::Client::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::Data::DESTROY: ()
SOAP::SOM::DESTROY: ()