Hi
1. If you are in Costing Based COPA, you don't need COGS as Cost Element
2. For Qty in Base UoM and Sales UoM, ensure you have both FKIMG and FKLMG mapped in KE4M to a separate Value Field
3. For COGS, Just VPRS condition is enough. Check your Billing doc (VF03) and see if VPRS is populated there.. If Yes, and you have mapped VPRS to a Value Field in KE4I and you have not reset it in KE4W, COGS will flow to COPA 100%
Rgds
Ajay M