We configured Global currencies without any problems. Did you the domain ETL? If no edit is possible then it is non-extensible. One have to assign the values with available or Rerun the Domain ETL.
Domain-only extract and load was done successfully, and I can see currencies, countries etc in the manage domain mappings and hierarchies. EUR is in the list and mapped. Any other suggestions?
We finally got this to work, by adding an Externally Conformed Domains:
In the Functional Setup Data Configuration and Load Plan Administration
select Manage Externally Conformed Domains
Configure Domain for E-Business Suite:
Conformed Currency Rate Type
After this we could select EUR as global currency 1.
There may be other possibilities, let me know if you managed to use alternative solutions.