Understanding Multicurrency Constants Setup
Before you can use any of the multicurrency features, you must set up these system-wide constants in the General Accounting Constants program (P0000):
Multicurrency conversion
Multicurrency intercompany transactions
Intercompany settlements method
Use these constants to specify the default conversion method for multicurrency processing to allow multicurrency intercompany transactions and to specify an intercompany settlement method. The system stores this multicurrency information in the General Constants table (F0009).