This repository contains specifications of the metamodel of the Asset Administration Shell, including the normative schemas of the serializations, the rules applied to create them, how the specification is mapped into the serializations, and examples of how to use the schemas.

Governance of the specification is done in the working group Open Technology of the IDTA

The specification number is: IDTA-01001

The schemas of the Asset Administration Shell for JSON, RDF and XML as well as a XMI and YAML representation of the metmodel are provided in the respective directories. These schemas are derived from the document series, part 1, "Details of the Asset Administration Shell" published by the Platform Industrie 4.0 and IDTA.

The JSON schema, mapping rules and examples are available at schemas/json/.

The RDF data model, mapping rules and examples are available at schemas/rdf/.

The XML schema, mapping rules and examples are available at schemas/xml/.

The XMI file for the UML metamodel is available at schemas/xmi/.

The following versioning scheme is applied: 'V<major>.<minor>.<patch>'. Major versions indicate breaking changes while minor updates are backward compatible. The patch position is increased whenever bugfixes need to be applied. The following release contains the latest version of the AAS schemas (see also the releases section of this repository):

• 3.0.7 is the corresponding release for the V3.0 version of the AAS metamodel, containing the normative schemas for the published document "Specification of the Asset Administration Shell: Part 1 - Version 3.0", including a number of minor bugifxes in the schema files. Use this release if you want to work with the latest specified AAS version.

Previous releases (deprecated by 3.0.7):

• 3.0.6 is the release for the V3.0 version of the AAS metamodel as published in April 2023, containing the normative schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0". Note that 3.0.7 fixes a number of known bugs in this version.
• 3.0.5RC02 is the corresponding release for the V3.0RC02 version of the AAS metamodel, containing the normative schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0RC02". No additional bugfix or patch releases for the metamodel version V3.0RC02 shall be expected.
• 3.0.4RC01 is the final release for the V3.0RC01 version of the AAS metamodel, containing the normative schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0RC01". No additional bugfix or patch releases for the metamodel version V3.0RC01 shall be expected.
• 3.0.3RC01 is a pre-release of the schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0RC01" that solves several typos and bugs of 3.0.2.RC01
• 3.0.2.RC01 is a pre-release of the schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0RC01" that solves several typos and bugs of 3.0.1.RC01
• 3.0.1.RC01 is a pre-release of the schemas for the published document "Part 1: Details of the Asset Administration Shell - The exchange of information between partners in the value chain of Industrie 4.0 - Version 3.0RC01" that solves a bug in the JSON schema of 3.0.RC01
• 3.0.RC01 is a pre-release containing the schemes as contained by the document 'Details of the Asset Administration Shell - Part 1 - Version 3.0.RC01' download

Feature requests, reports about inconsistencies, mistakes etc. are highly welcome! Please submit a new issue.

If you want to contribute, see CONTRIBUTING.md.

This work is licensed under a Creative Commons Attribution 4.0 International License. The implementation is based on the specifications of the "Details of the Asset Administration Shell" published on https://www.plattform-i40.de and https://industrialdigitaltwin.org/en/ which is licensed under Creative Commons CC-BY-4.0.