Expense reports - Location Spending limits in currency

Hello

I'm working on Peoplesoft Expense 9.1.

I setup Expense report with location spending limit amounts in EUR. (BU is in EUR as well).

When I create an expense report with an amount in EUR higher than the spending limit : I get (as expected) an exception.

But when I create an expense report in another currency (for ex USD), I don't get any exceptions. The system gets automatically a convertion rate, and calculates the amount in EUR, but even if it's higher than the spending limit, no exceptions are generated.

Does that mean that I should create spending limits in several currencies for each location? Or did I missed something?