You can maintain daily exchange rates for use in foreign currency conversion, and you can also specify a date range for a specific rate. You maintain daily rates in Oracle General Ledger.
See: Entering Daily Rates
You can associate a daily rate with a conversion rate type by using predefined rate types such as Spot and Corporate. This means that the conversion rate associated with the rate type is automatically used whenever you perform foreign currency conversions. Some rate types such as Spot and Corporate are predefined. You can also use Oracle General Ledger to define additional rate types of your own.
See: Defining Conversion Rate Types
When you create a business group, the Corporate currency type is predefined for HRMS Intelligence (BIS) and Core HRMS (HRMS Reporting and Payroll Processes). However, you can modify HRMS User Tables so that the default value of Corporate can be overridden for each of the following:
BIS
HRMS Reporting
Payroll Processes