With this post, I hope I can show the importance of exact reversing. Navision from a quite long has an option in S&R Setup and P&P Setup called "Exact Cost Reversing Mandatory". These options can explain many times incorrect valuation that I meet in some implementations. 1. Setup Let's create 2 items (A and B) both have a costing method of average. Each item will have a distinct Inventory Posting group. Objective is to have distinct Inventory Accounts. Item A will have G/L Account...