ifcos-errors-schema

Use when encountering IFC schema errors or migrating between IFC2X3, IFC4, and IFC4X3. Prevents the common mistake of using IFC4-only entities (e.g., IfcMaterialConstituentSet) in IFC2X3 files. Covers entity availability differences, attribute type changes, ifcpatch for schema migration, and common SchemaError debugging. Keywords: SchemaError, IFC2X3, IFC4, IFC4X3, schema migration, ifcpatch, entity not found, schema compatibility, IFC version, wrong schema, convert IFC version.

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