EN 16931 Validator
Validator
🇩🇰 Validate EN 16931 Invoices for Denmark
EN 16931B2G MandatoryPeppol
EN 16931 is required for B2G in Denmark. Denmark was a B2G e-invoicing pioneer (mandatory since 2005).
Quick Facts
What We Validate
EN 16931 semantic model compliance
Business rule validation (BR-xx rules)
VAT category rules (BR-S, BR-Z, BR-E, etc.)
Calculation rules (BR-CO-xx)
Code list validation
Party identification
Cross-border requirements
Common EN 16931 Errors
Denmark E-Invoicing Requirements
Phase
Status
Scope
B2G
Live (2005)
All suppliers to public sector
Bookkeeping Act (certified SW)
Live (Jan 2024)
Medium/large companies using certified software
Bookkeeping Act (custom SW)
Live (Jan 2025)
Medium/large companies using custom software
Bookkeeping Act (remaining)
Jan 2026
Financial + personally-owned companies (>DKK 300K turnover)
Required CIUSOIOUBL 2.1 (Danish UBL customization)
Government portalNemHandel (national e-invoicing infrastructure)
Routing identifierGLN/EAN number (via NemHandel Registry)
PeppolYes — NemHandel and Peppol are interconnected
NemHandel vs Peppol. Denmark maintains its own NemHandel infrastructure interconnected with Peppol. If your customer sends to Danish public entities, they need either a NemHandel or Peppol connection. GLN/EAN numbers are used for recipient identification via the NemHandel Registry (NHR). Denmark is evaluating whether to transition fully to Peppol.
FAQ
What is EN 16931?
EN 16931 is the European standard for electronic invoicing. It defines a semantic data model and business rules that all EU e-invoices must follow, regardless of syntax (UBL or CII).
Is EN 16931 mandatory?
For B2G invoices to EU public sector, yes. For B2B, it depends on the country. Under ViDA (VAT in the Digital Age), EN 16931 compliance will become essential across the EU.
What syntax should I use for EN 16931?
EN 16931 supports two syntaxes: UBL 2.1 and UN/CEFACT CII. UBL is more common for Peppol; CII is used in ZUGFeRD/Factur-X. Both express the same data.
What's a CIUS?
A CIUS (Core Invoice Usage Specification) is a national adaptation of EN 16931. Examples: XRechnung (Germany), Peppol BIS (international), CIUS-RO (Romania).
How do I prepare for ViDA?
Start by ensuring your invoices comply with EN 16931. Our validator checks all the business rules that will be required under the ViDA e-invoicing mandate.
Validators
XRechnung Validator
Validators
ZUGFeRD Validator
Answers
How do you validate an e-invoice?
Answers
What is Peppol BIS Billing 3.0 and how does it work?
Learn
Free EN 16931 Validator
Learn
Validate EN 16931 Invoices for germany
Blog
EN 16931 Validation: The Complete Rule Map (955 Rules Explained)
Blog
The 10 Most Common E-Invoice Errors in 2026 (and How to Fix Each One)
Validate your Denmark EN 16931 invoices
Upload and validate instantly. Auto-fix common errors.
Try the Validator