Planned Maintenance Classification Assigns category classification to building elements based on SFG20 coding. It facilitates the identification of maintainable assets, providing a benchmark for optimum maintenance to avoid over or under maintaining. 'Apply' creates a Classification Reference for selected IFC entity, using BESA-required attributes derived from the item that you choose in the following list. IfcElement IfcDoorStyle IfcBuildingElementType IfcDistributionElementType IfcElementComponentType IfcFurnishingElementType IfcTransportElementType IfcWindowStyle IfcGroup