The document discusses using Oracle's Subledger Accounting (SLA) functionality to enable improved product line accounting, expense accounting for enterprise asset management (EAM), and other cost accounting needs. SLA allows creating custom accounting rules and transaction sources to map transactions from supply chain modules like inventory and work-in-process to the general ledger in a more flexible way than standard Oracle functionality. The document provides an overview of key business requirements and recommends using SLA with custom sources defined on the item master to provide separate accounts for things like cost of goods sold, expenses, and inventory by product line, location, and other attributes.