# ISO 10303-21:1994 — Withdrawn and superseded ISO standards

For ISO 10303-21:1994, item title is Industrial automation systems and integration — Product data representation and exchange — Part 21: Implementation methods: Clear text encoding of the exchange structure; status code is 9599; successor is ISO 10303-21:2002; withdrawn / published date is 1994-12-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 10303-21:1994 _(verified: appears in the quote below)_
- **Item title:** Industrial automation systems and integration — Product data representation and exchange — Part 21: Implementation methods: Clear text encoding of the exchange structure _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 10303-21:2002
- **Withdrawn / published date:** 1994-12-15 _(verified: appears in the quote below)_

## What the source says

> 20580,IS,,ISO 10303-21:1994,Industrial automation systems and integration — Product data representation and exchange — Part 21: Implementation methods: Clear text encoding of the exchange structure,Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits — Partie 21: Méthodes de mise en application: Encodage en texte clair des fichiers d'échange,1994-12-15,1,['25.040.40'],ISO/TC 184/SC 4,9599,,[33713],['en'],57,<p>Specifies an exchange structure format using a clear text encoding of product data for which the conceptual model is specified in the EXPRESS language. The file format is suitable for the transfer of product data among computer system

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).