Apex type not found for element : userDetails - salesforce

Question

I m getting the following response from the webservice
<?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"><SOAP-ENV:Body><GetUserResponse xmlns="urn:wwservice"><userDetails xmlns="">Successfully write a web service hurray</userDetails></GetUserResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>
But I getting Apex type not found for element : userDetails
Here's my wsdl file
<?xml version="1.0" encoding="ISO-8859-1"?>
<definitions xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="urn:wwservice" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="urn:wwservice">
<types>
<xsd:schema elementFormDefault="qualified" targetNamespace="urn:wwservice">
<xsd:import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
<xsd:import namespace="http://schemas.xmlsoap.org/wsdl/"/>
<xsd:complexType name="GetUserRequestType">
<xsd:all>
<xsd:element name="Username" type="xsd:string" form="unqualified"/>
<xsd:element name="Password" type="xsd:string" form="unqualified"/>
</xsd:all>
</xsd:complexType>
<xsd:complexType name="GetUserResponseType">
<xsd:all>
<xsd:element name="userDetails" type="xsd:string" form="unqualified"/>
</xsd:all>
</xsd:complexType>
<xsd:element name="GetUser" type="tns:GetUserRequestType"/>
<xsd:element name="GetUserResponse" type="tns:GetUserResponseType"/>
</xsd:schema>
</types>
<message name="GetUserRequest">
<part name="parameters" element="tns:GetUser"/></message>
<message name="GetUserResponse">
<part name="parameters" element="tns:GetUserResponse"/></message>
<portType name="PsocialPortType">
<operation name="GetUser">
<input message="tns:GetUserRequest"/>
<output message="tns:GetUserResponse"/>
</operation>
</portType>
<binding name="PsocialBinding" type="tns:PsocialPortType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="GetUser">
<soap:operation soapAction="urn:wwservice#GetUser" style="document"/>
<input><soap:body use="literal" namespace="urn:wwservice"/></input>
<output><soap:body use="literal" namespace="urn:wwservice"/></output>
</operation>
</binding>
<service name="Psocial">
<port name="PsocialPort" binding="tns:PsocialBinding">
<soap:address location="http://example.com/webservice/wwservice.php"/>
</port>
</service>
</definitions>
Please let me know where i getting wrong
I m using this to create WSDL
$server = new soap_server();
// Changed for coupons data start
$server->soap_defencoding = 'UTF-8';
$server->decode_utf8 = false;
// Changed for coupons data end
//$server->configureWSDL('m-way', 'urn:wwservice');
$server->configureWSDL('Psocial', 'urn:wwservice',false,'document');
// New function for spiff
$server->register("GetUser",
array('Username'=>'xsd:string','Password'=>'xsd:string'),
array('userDetails'=>'xsd:string'),
'urn:wwservice',
'urn:wwservice#GetUser', 'document', 'literal'
);
$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA)? $HTTP_RAW_POST_DATA : file_get_contents('php://input');
$server->service($HTTP_RAW_POST_DATA);

Answer 1

The problem is that the SOAP response you get doesn't match the description of it in the WSDL, the WSDL has elementFormDefault="qualified" for the schema, which says that child element would be in the namespace, e.g. its saying the response should be
<GetUserResponse xmlns="urn:wwservice">
<userDetails>Hello</userDetails>
</GetUserResponse>
but the actual response you get has
<GetUserResponse xmlns="urn:wwservice">
<userDetails xmlns="">Successfully write a web service hurray</userDetails>
</GetUserResponse>
Note how the namespace for the userDetails element is different. You should either update the WSDL to say elementForDefault="unqualified" or update the web service to return the correct namespace on the userDetails element.