The article discusses how Wavin is working to make their cost accounting practices more consistent across different countries. They want to save money, improve communication, and be more transparent. They looked at three types of cost calculations and found differences that need to be addressed. The standard cost price is based on forecasts and budgeted costs, the IFRS adjustment is for inventory valuation, and the fiscal cost price is for financial reporting. By understanding these differences and making adjustments, Wavin can create more harmony in their cost accounting practices.