Definition
Project stock where each material is managed on a quantity basis only, without being valuated directly in terms of money. Goods movements to individual stock are not valuated and do not give rise to postings in Financial Accounting. In general you calculate the value of the project stock in total at the period end by results analysis; the values are then transferred to Financial Accounting.
Use
From the accounting point of view, working with valuated project stock offers the following advantages over working with non-valuated project stock:

Unless you are compelled by the need for compatibility with earlier data to use non-valuated project stock, we recommend that you use valuated project stock because future program development will extend this functionality.
You cannot convert existing projects with non-valuated individual stock.
See also:
Logistical Processing When Working with Project Stock Constraints on Working with Valuated and Non-Valuated Project Stock