Query/response mapping between different policy systems

Hi all,

I am trying to investigate the value and the applicability of mapping
the query/response of different policy frameworks, so that parties
(could be agents, web services, etc.) from different policy domains
can communicate directly in transparent manner.
Practically speaking, I need to know what are the most needed
transformations in the context? from which language to which?
Does anyone working in a policy management frameworks have
recommendations in this track?

Regards,
Somaya