ISO 10303-42-2003 cor1-2007 PDF

Full title and description

ISO 10303-42:2003/Cor 1:2007 — Industrial automation systems and integration — Product data representation and exchange — Part 42: Integrated generic resource: Geometric and topological representation — Technical Corrigendum 1 (corrigendum issued to ISO 10303-42:2003). This corrigendum provides official corrections and clarifications to the 2003 edition of Part 42 (geometry and topology resource definitions) and is distributed as a short PDF corrigendum document.

Abstract

This document is a technical corrigendum to ISO 10303-42:2003. It records corrections to textual descriptions, EXPRESS schema fragments, examples and normative cross-references in Part 42 (the integrated generic resource for geometric and topological representation). The corrigendum ensures consistent interpretation and implementation of the resource constructs used by STEP-based data exchange implementations.

General information

• Status: Withdrawn (corrigendum to ISO 10303-42:2003).
• Publication date: 9 July 2007 (July 2007).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control / Product data representation and exchange).
• Edition / version: ISO 10303-42:2003/Cor 1:2007 — Technical Corrigendum 1 (applies to Edition 4 of ISO 10303-42:2003).
• Number of pages: 14 (corrigendum document).

Scope

The corrigendum applies only to ISO 10303-42:2003 (Part 42 of the STEP family) and is limited to corrections and clarifications needed for accurate implementation of the integrated generic resources for geometric and topological representation. It addresses identified editorial and technical errors (for example in normative text, entity definitions, EXPRESS listings, diagrams and cross-references) so implementers of STEP resources and application protocols can apply the corrected definitions consistently. It does not extend the original scope of Part 42 or add new normative requirements beyond those corrections.

Key topics and requirements

• Corrections to EXPRESS schema fragments and information object definitions used for geometry and topology.
• Clarifications to entity semantics for geometric primitives (points, curves, surfaces) and topological constructs (vertices, edges, faces, shells).
• Fixes to normative relationships and integrity constraints that affect boundary representation (B-rep) and geometric model consistency.
• Editorial corrections to normative text, examples, diagrams and cross-references to other STEP resources and parts.
• Guidance to implementers on applying corrected schema items to STEP-based data exchange and archival workflows.

Typical use and users

Used by standards engineers, CAD/PLM software developers, implementers of STEP application protocols, data exchange integrators and quality/validation teams who need authoritative corrections to ISO 10303-42:2003. Typical tasks include updating EXPRESS schema implementations, fixing data exporters/importers, validating B-rep and geometric topology data, and ensuring consistent interpretation of Part 42 constructs across systems.

Related standards

Part 42 is a resource within the ISO 10303 (STEP) family. Closely related parts and documents include ISO 10303-41 (fundamentals of integrated generic resources), ISO 10303-43 (representation structures), ISO 10303-21 (STEP-File), and various STEP application protocols (for example AP203/AP214/AP242) that reuse Part 42 resources. Later revisions of Part 42 (2014, 2018 and subsequent editions) incorporate this corrigendum and additional changes.

Keywords

ISO 10303, STEP, Part 42, geometry, topology, integrated generic resource, EXPRESS, corrigendum, technical corrigendum, B-rep, CAD data exchange, PLM, schema corrections.

FAQ

Q: What is this standard?

A: It is Technical Corrigendum 1 to ISO 10303-42:2003 — an official correction document that fixes errors and clarifies text and schema items in Part 42 (geometric and topological resource) of the STEP (ISO 10303) family.

Q: What does it cover?

A: It covers editorial and technical corrections to the 2003 edition of ISO 10303-42, including corrected EXPRESS schema fragments, entity definition clarifications, corrected examples and updated cross-references to ensure correct implementation of geometry and topology constructs.

Q: Who typically uses it?

A: Standards implementers, CAD/PLM developers, data exchange integrators, conformance testers and anyone implementing or validating STEP resources that depend on Part 42.

Q: Is it current or superseded?

A: The corrigendum applied to ISO 10303-42:2003. Over time Part 42 has been revised (subsequent editions were published after 2003), and the corrigendum’s corrections were incorporated into later editions of Part 42. The corrigendum document itself is listed as withdrawn in lifecycle records once superseded by later editions.

Q: Is it part of a series?

A: Yes — it is part of the ISO 10303 (STEP) family of standards. Part 42 is one of the integrated generic resources that other STEP application protocols reuse for geometric and topological representation.

Q: What are the key keywords?

A: Geometry, topology, STEP, ISO 10303, Part 42, EXPRESS, corrigendum, B-rep, CAD data exchange, PLM, schema corrections.