This document discusses valuation and split valuation in SAP MM. It defines valuation as determining the current worth of a material in the system. Split valuation allows managing a material as separate partial stocks that can each be valued differently in the same valuation area (company or plant). Reasons for split valuation include different origins, grades, or procurement sources for a material. The document provides an example of setting up split valuation to value in-house and externally procured materials of the same item differently. It also discusses valuation areas, classes, and how to configure and use split valuation in transactions.