In Concur Expense, you can use expense type mapping or account code mapping to support a wide range of accounting system structures. This flexibility includes support for multiple ledgers and account codes defined at various levels within a ledger hierarchy.

You can define account codes at any of these levels:
- Global
- Ledger
- Sub-ledger
Only the Unrestricted Expense Configuration administrator can add segments to the expense account code hierarchy. You must assign an account code at one of the ledger levels to all active expense types; otherwise, users will receive error messages when creating expense entries.
You can assign multiple account codes to an expense type within a single ledger by using an Account Code Hierarchy. The system searches for the appropriate account code, starting at the lowest level, and moves up the hierarchy until it finds an account code.

