Certain elements from the VEC model are intentionally excluded from the OPC UA transformation to ensure that only relevant data for machine environments is retained. The reason for these exclusions is that many engineering-related data elements are not needed in the machine environment. Machine-oriented OPC UA models focus on runtime-relevant information that is essential for system operation. Engineering-specific metadata (such as design documentation, internal references, or abstract concepts) does not need to be transmitted to the OPC UA-based runtime environment. The filtering ensures that only the essential data structures required for real-time processing are included in the final OPC UA model.

This filtering follows two primary mechanisms:

Some UML stereotypes, such as MagicDraw_Profile:Legend, are explicitly ignored in the transformation. Classes or attributes tagged with these stereotypes are not converted into OPC UA elements.

The transformation relies on a whitelist mechanism (<def:class> entries) to determine which classes and attributes are mapped to OPC UA. If a VEC class is not explicitly listed in the whitelist, it is not included in the transformation. This also applies to attributes that are not defined as Field elements in the OPC UA mapping.