Just popping in
FpML and FIXML interoperability
I'm making a research of different XML standards for financial instruments representation.
I'm trying to understand differences between FIXML and FpML and see what are the synergies and how they can interoperate together.
From what I've seen, a good approach could be use FIXML for the session layer (message transport) and then use FpML (including extensions if needed) for the trades representation (message content). But in some cases, maybe FIXML could fit better (for example for listed derivatives).
I've seen some working groups for support interoperability between both standards, but are old or already inactive.
Any advice on this?