FIX Protocol has the message suites defined and in use now

Sassan - just want to echo and support your post. FIX has proven messages that are in use today to manage and convey party details, risk parameters, and entitlements. These messages were developed in conjunction with Deutsche Boerse and the CME. Flexible, powerful, easy to implement on existing FIX infrastructure. As you know very well, FIX also fully supports FpML payloads both at the session layer and via attachment within standard FIX message flows.

We found the power of these messages in our own onboarding and certification practice and products at Lasalletech.

I think I can speak for all of us within the FIX Community when I say let us know how we can help. What a great opportunity to improve overall efficiency and more important quality of trading operations for the industry.