This is the code that makes the request:

use SOAP::Lite (+trace => 'all', maptype => {}, encoding => 'iso-8859-
+1', readable => 1 );
my $soap = SOAP::Lite
$soap->outputxml(1);
$soap->proxy('http://xxxx', timeout => '60' );
$soap->uri('urn:xxxx');                                  
$soap->on_action( sub { join '/', 'xxxx', $_[1] } );

//@params gets filled with the data tags

my $method = SOAP::Data->name( 'xxxx' );
my $result = $soap->call($method => @params)
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Sorry but I have to strip out some things. Anyway, there isn't another call being made in the code. So it seems that either SOAP::lite takes an initiative to make another call or the server tells it to, I'm not sure.