8.1 Integration with Materials Management (MM)

The integration between SAP Financial Accounting (FI) and Materials Management (MM) is essential for automatically reflecting the financial impact of all goods movements within the supply chain. This real-time integration ensures that inventory values and material-related expenses are always up-to-date in the General Ledger without manual intervention.

This integration is made concrete through a process called automatic account determination, configured primarily in OBYC. All material movements in MM, such as a goods receipt (Movement Type 101) or a goods issue to a customer (Movement Type 601), are controlled by Movement Types. Each movement type is linked to a transaction key, which in turn determines the specific G/L accounts that are automatically posted in FI. For instance, a goods receipt for a purchase order (MVT 101) will trigger a debit to the Inventory G/L account and a credit to the GR/IR (Goods Receipt/Invoice Receipt) clearing account, creating a direct and auditable link between logistics and accounting.

This seamless flow of information continues with the integration between finance and the sales process.

8.2 Integration with Sales and Distribution (SD)

The FI-SD integration is critical for managing the complete order-to-cash process, ensuring that all sales activities are accurately translated into revenue and customer receivables in the financial ledger.

The primary link between SD and FI occurs when billing documents, such as invoices or credit memos, are created in the SD module. Upon saving a billing document in SD, the system automatically generates a corresponding accounting document in FI. This posting updates the relevant customer account in the Accounts Receivable sub-ledger and posts revenue to the appropriate G/L accounts, making the entire process efficient and less prone to error.

A key point of integration is the Credit Control Area, which is used for credit management in both the AR sub-module and the SD component, ensuring consistent credit checks during the sales order process.

The integration extends beyond logistics to the crucial link between external financial accounting (FI) and internal management accounting, which is handled by the Controlling (CO) module.