Issue CORE-108: Party Identification References

Section 5.2.2.4 states, regarding PartyId/@type:

  "It is RECOMMENDED that the value of the type attribute be a URI. It
  is further RECOMMENDED that these values be taken from the EDIRA
  [ISO6523], EDIFACT [ISO9735] or ANSI ASC X12 [ASCI05] registries."

I can locate no reference to such an X12 registry of types.
Furthermore, the references to ISO 6523 and 9735 are for the syntax of
the type ID schemes, not the actual registries themselves.  Can anyone
provide better links to any of these?

--Pete
Pete Wenzel