A secondary ledger is an optional ledger that is linked to a primary ledger for the purpose of tracking alternative accounting representations of the same transactions. A secondary ledger can differ from its primary ledger by one or more of the following attributes: accounting method, chart of accounts, accounting calendar, currency, and journal processing options. A secondary ledger is not used to meet local accounting requirements, as this can be achieved by using reporting currencies or subledger accounting rules. A secondary ledger is not used to maintain balances in a different currency only, as this can be achieved by using reporting currencies or revaluation. A secondary ledger is not used to maintain balances for processing performance, as this can be achieved by using ledger sets or data access sets. Reference: Oracle Financials Cloud: General Ledger 2022 Implementation Professional Objectives - Configure Secondary Ledgers 12