my %methods = (
ActivateLicense => {
    endpoint => '<valid endpoint>',
    soapaction => '<valid soap action>',
    namespace => '<valid namespace>',
    parameters => [
      SOAP::Data->new(name => 'timestamp', type => 'tns:timestamp', attr => {}),
      SOAP::Data->new(name => 'guid', type => 'tns:guid', attr => {}),
      SOAP::Data->new(name => 'machineName', type => 'tns:machineName', attr => {}),
    ], # end parameters
  }, # end ActivateLicense
)

##</code><code>##

my %foo = Mercury::ActivateLicense( 
    timestamp   => $s{timestamp},
    guid        => $s{guid},
    machineName => $s{machineName} 
    );

##</code><code>##

<?xml version="1.0" encoding="UTF-8"?><soap:Envelope xmlns:ns="http://schemas.xmlsoap.org/soap/encoding/" soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tns="<valid namespace>" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><tns:Activate><timestamp xsi:nil="true" xsi:type="tns:timestamp" /><guid xsi:nil="true" xsi:type="tns:guid" /><machineName xsi:nil="true" xsi:type="tns:machineName" /></tns:ActivateLicense></soap:Body></soap:Envelope>

##</code><code>##

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:mer="<valid namespace>">
   <soapenv:Header>
   </soapenv:Header>
   <soapenv:Body>
      <mer:Activate systemId="?">
         <timestamp>TIMESTAMP</timestamp>
         <guid>GUID</guid>
         <machineName>FOO</machineName>
      </mer:ActivateLicense>
   </soapenv:Body>
</soapenv:Envelope