BSI PD CEN/TS 16931-13:2026

Current Revision
Electronic invoicing -- Functional specification and guidance for the eInvoice Registry of CIUS and Extensions

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BSI PD CEN/TS 16931-13:2026

Electronic invoicing -- Functional specification and guidance for the eInvoice Registry of CIUS and Extensions

PUBLISH DATE 2026
PAGES 54
BSI PD CEN/TS 16931-13:2026

This document defines the purpose, governance and functional requirements of the eInvoicing Registry for CIUS and Extension Specifications. This document is not to be confused with other business / project focused Technical Specifications. It follows CEN rules and will be published as a CEN document with normative statements.

A key part of this document is to provide a functional specification, which will describe the various functions of eInvoice Registry Services. The Registry is intended to serve as a structured, transparent and publicly accessible repository that facilitates the discovery, registration and management of eInvoicing Specifications that either restrict the conditional elements of the Core Invoice Model and/or extend it in conformance with Part 5 Extension Methodology.

The scope of this document includes:

  • Definition of Registry Services - the structure and capabilities of the Registry including the types of artefacts it stores or references, e.g. CIUS, Extension Specifications, Validation Artefacts and Services, and Code Lists;
  • Governance Model - the roles and responsibilities of entities involved in managing and maintaining the Registry;
  • Submission and Verification Processes - how Specifications are submitted, reviewed and verified for inclusion in the Registry;
  • Functional Specification - the required functionality, processes and procedures that enable the Registry to operate efficiently.
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