This document describes:
- the rationale for building customisation supporting business cases that are specific to their business environment while maintaining organisational and semantic interoperability with the TC 440 specifications;
- the difference between Usage specification and Extension specification;
- a methodology on how to define customisations on:
- BII Transaction specification,
- Business rules,
- Code lists;
- how to claim compliance or conformance to a customisation of a TC 440 specification;
- the connection to the eProcurement Ontology project.
This specification does not describe the detailed process of building an extension.
Life cycle
NOW
PUBLISHED DS CEN/TS 17011-3:2024 60.60
Standard published Sep 12, 2025
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