If you have custom objects, you must map the custom object properties, interfaces, and classes to the SDx Common schema using the HxGN SDx Web Client and Smart Engineering Manager (Schema Module) applications. This involves creating a change request, relating the custom properties to the new change request, and then regenerating the common schema in SDx. Then, use the Schema Management module in the Smart Engineering Manager (SEM) Web Client to change the SIOMap file and the Smart 3D Catalog schema for any custom properties, interfaces, and classes added to the SDx Common schema.