Asset accounting is a subsidiary ledger of the general ledger and is used to manage and document fixed asset transactions in detail. In general ledger accounting, you update depreciation and changes to asset balance sheet values in asset accounting. You make various account assignments to cost accounting for these transactions. Because of the integration in SAP S/4HANA, Asset Accounting (FI-AA) transfers data directly to and from other SAP S/4HANA components such as Financial Accounting (FI) components.