The CAT-MFG-ASSYCODE (Catalog + Manufacturer + AssemblyCode) key system allows you to generate the Electrical BOM in Vault even if there two symbols using the same key.
CAT-Only Key System
When calculating the quantity for the BOM items in Vault, the items with the same Catalog Number are considered as the same item. The Manufacturer and Assembly Code information of the items are not considered in the calculation.
CAT-MFG-ASSYCODE Key System
When calculating the quantity for the BOM items in Vault, the Catalog Number, Manufacturer, and Assembly Code are combined. Items with the same Catalog Number, Manufacture, and Assembly Code are considered as the same items, which is the same in the AutoCAD Electrical BOM report.