Ah.. got it. Although it feels weird posting replies to my own question, it does stop other people wasting their time answering something I've already figured out.

I found the answer in an old mailing list archive. To avoid variables being genericaly labelled as c-gensym#, you have to pass them through a SOAP::Data object, for example: 

my $req = 
  $soap->getPhone(
       SOAP::Data->name(phoneName => 'SEP000000000000')
  )

[download]

I hope this helps anyone else that may be having the same problem.

In reply to Re^2: Syntax used by SOAP::Lite by smeenz
in thread Syntax used by SOAP::Lite by smeenz

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