The solution to issues like these is SAP's Production Cost Accounting. Because the information is derived directly from Manufacturing (e.g. material consumption or confirmation of production orders) it is of very high quality.
Production Cost Accounting allows for easy comparison of calculations and actual costs, as well as for quick reports on WIP inventory and actual product cost.
As one of the leading service providers for the manufacturing industry, we are happy to offer you our project management and technology know-how in the field of Production Cost Accounting.