SIST-TS CEN/TS 16931-5:2025

SLOVENSKI STANDARD
01-december-2025
Nadomešča:
SIST-TP CEN/TR 16931-5:2017
Elektronsko izdajanje računov - 5. del: Smernice za uporabo v sektorju ali državi v
povezavi z EN 16931-1, metodologija za uporabo v realnem okolju
Electronic invoicing - Part 5: Guidelines on the use of sector or country extensions in
conjunction with EN 16931-1, methodology to be applied in the real environment
Elektronische Rechnungsstellung - Teil 5: Leitfaden über die Verwendung von branchen-
oder länderspezifischen Erweiterungen der EN 16931-1 einschließlich einer im realen
Umfeld einzusetzenden Methodik
Facturation électronique - Partie 5: Lignes directrices relatives à l'utilisation des
extensions de secteur ou de pays conjointement avec l'EN 16931-1, avec une
méthodologie à appliquer dans l'environnement réel
Ta slovenski standard je istoveten z: CEN/TS 16931-5:2025
ICS:
03.100.20 Trgovina. Komercialna Trade. Commercial function.
dejavnost. Trženje Marketing
35.240.63 Uporabniške rešitve IT v IT applications in trade
trgovini
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 16931-5
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
October 2025
TECHNISCHE SPEZIFIKATION
ICS 35.240.20; 35.240.63 Supersedes CEN/TR 16931-5:2017
English Version
Electronic invoicing - Part 5: Guidelines on the use of
sector or country extensions in conjunction with
EN 16931-1, methodology to be applied in the real
environment
Facturation électronique - Partie 5: Lignes directrices Elektronische Rechnungsstellung - Teil 5: Leitfaden
relatives à l'utilisation des extensions de secteur ou de über die Verwendung von branchen- oder
pays conjointement avec l'EN 16931-1, avec une länderspezifischen Erweiterungen der EN 16931-1
méthodologie à appliquer dans l'environnement réel einschließlich einer im realen Umfeld einzusetzenden
Methodik
This Technical Specification (CEN/TS) was approved by CEN on 27 July 2025 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16931-5:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 The challenge of interoperability . 12
4.1 Interoperability through standardization . 12
4.2 The challenge . 12
5 Extension Components . 13
5.1 The benefits of Extension Components . 13
5.2 Assessing Extension Components . 13
5.3 Developing and publishing Extension Components . 13
5.4 Maintenance cycle - Maintaining Extension Components . 16
5.5 Importance for Stakeholders . 17
6 Extension Specifications . 18
6.1 General . 18
6.2 The purpose of Extension Specifications . 18
6.3 Who will develop Extension Specifications and why? . 18
6.4 Using the Scope for Extensions. 19
6.5 What may be specified in an Extension Specification . 19
6.6 Documentation of Extension Specifications . 23
6.7 Mapping to syntax . 23
6.8 Governance of Extension Specifications . 23
6.9 Identification of Extension Specifications . 23
7 Claiming Conformance . 24
7.1 Compliance vs Conformance . 24
7.2 Conforming objects . 25
7.3 Conformance of Extension Specifications . 25
7.3.1 General . 25
7.3.2 Core Conformant . 25
7.3.3 Partly Core Conformant . 25
7.3.4 Comparison of Core Conformance and Partly Core Conformance . 25
7.4 Determining Conformance . 26
7.5 Conformance of an Extended Invoice Instance Document . 27
8 The process of creating an Extension Specification . 27
8.1 How parties agree on using an Extension Specification . 27
8.2 Statement of objectives . 27
8.3 Gathering of business requirements . 27
8.4 Mapping against the Core Invoice Model . 27
8.5 Evaluate what is currently in use . 28
8.5.1 General . 28
8.5.2 Using Extension Components . 28
8.6 Re-evaluate requirements and/or re-evaluate processes . 33
8.7 List requirements . 33
8.8 Define required changes . 33
8.9 Create specification . 34
8.10 Evaluate type of changes . 34
8.11 Publish Extension Specification . 34
8.11.1 General . 34
8.11.2 How end users use the Registry. 36
8.12 Bind to syntax. 37
Bibliography . 38
European foreword
This document (CEN/TS 16931-5:2025) has been prepared by Technical Committee CEN/TC 434
“Electronic invoicing”, the secretariat of which is held by NEN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 16931-5:2017.
This document includes the following significant technical changes with respect to
CEN/TR 16931-5:2017:
— updating concepts in alignment with EN 16931-1;
— introducing the concept of Extension Components. This should greatly improve interoperability
cross-sector and intra-EU where Extended Information Elements are required;
— changing the definition of the Terms Compliant and Conformant. Previously they were based on
TOGAF terminology[10]. This avoids confusing the terms when used in legal text compared to
normative text;
— compliant now refers only to legal specifications;
— conformant refers only to normative text;
— recommending the use of multilateral business agreements rather than bilateral when using
Extension Specifications.
This document is part of a set of documents, consisting of:
— EN 16931-1:— , Electronic invoicing — Part 1: Semantic data model of the core elements of an
electronic invoice
— CEN/TS 16931-2:2017, Electronic invoicing — Part 2: List of syntaxes that comply with EN 16931-1
— CEN/TS 16931-3-1:2017, Electronic invoicing — Part 3-1: Methodology for syntax bindings of the core
elements of an electronic invoice
— CEN/TS 16931-3-2:2020, Electronic invoicing — Part 3-2: Syntax binding for ISO/IEC 19845 (UBL 2.1)
invoice and credit note
— CEN/TS 16931-3-3:2020, Electronic invoicing — Part 3-3: Syntax binding for UN/CEFACT XML
Industry Invoice D16B
— CEN/TS 16931-3-4:2020, Electronic invoicing — Part 3-4: Syntax binding for UN/EDIFACT
INVOIC D16B
Under preparation. Stage at the time of publication: prEN 16931-1:2025.
— CEN/TR 16931-4:2017, Electronic invoicing — Part 4: Guidelines on interoperability of electronic
invoices at the transmission level
— CEN/TS 16931-5:2025, Electronic invoicing — Part 5: Guidelines on the use of sector or country
extensions in conjunction with EN 16931-1, methodology to be applied in the real environment
— CEN/TR 16931-6:2017, Electronic invoicing — Part 6: Result of the test of EN 16931-1 with respect to
its practical application for an end user
— CEN/TS 16931-7:2020, Electronic invoicing — Part 7: Methodology for the development and use of
EN 16931-1 compliant structured Core Invoice Usage Specifications
— CEN/TS 16931-8:2024, Electronic invoicing — Part 8: Semantic data model of the elements of an e-
receipt or a simplified electronic invoice
— CEN/TR 16931-9:2024, Electronic invoicing — Part 9: VAT reporting and gap analysis with current
e-invoicing standardization deliverables
—
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