It is important to determine what version of the Control dataset you are running before attempting any Ecommerce mapping.
Navigate to Setup>Pricing Setup> All Pricing Setup inside of Control.
Navigate to User Constants in the left column panel.
If you see Product Info in the middle panel, click on ProductInfo, then find DatasetVersion, if the version number begins with “3” then you are running Dataset v3. All v3 datasets must follow the path for v3.
If you DO NOT see Product Info then you are NOT v3 and must follow the path for v2.
Follow the correct wiki for the dataset version you are running in Control.