UBL Validator
Validator
🇭🇷 Validate UBL Invoices for Croatia
UBLPlannedPeppol
UBL 2.1 is planned in Croatia. Croatia introduces Fiscalization 2.0 from January 1, 2026, implementing mandatory B2B e-invoicing with Continuous Transaction Controls (CTC).
Quick Facts
What We Validate
UBL 2.1 XML schema validation
EN 16931 business rules
Namespace and element structure
Code list validation
Party and address structure
Tax calculation rules
Invoice line consistency
Common UBL Errors
Croatia E-Invoicing Requirements
Phase
Status
Scope
B2G
Live (Jul 2019)
All public sector suppliers
B2B (VAT-registered)
Jan 2026
All VAT-registered businesses
B2B (non-VAT)
Jan 2027
Non-VAT registered entities (small companies, freelancers)
Validation engineTax Administration fiscalization service + e-Reporting
Required CIUSEN 16931 with Croatian extensions
Government portalFINA eRačun (B2G), AMS directory (B2B)
Routing identifierOIB (Personal Identification Number) via AMS directory
PeppolYes — FINA is a certified Peppol Access Point
Croatia's dual fiscalization model is unique in the EU and adds integration complexity that standard Peppol or clearance models don't have.
FAQ
What is UBL 2.1?
UBL (Universal Business Language) 2.1 is an open XML standard for business documents developed by OASIS. It defines schemas for invoices, orders, and 60+ other document types.
Is UBL the same as Peppol?
No. UBL is the document format; Peppol is the network. Peppol BIS Billing is built on UBL 2.1 with additional business rules.
Should I use UBL or CII for EN 16931?
Both are valid syntaxes for EN 16931. UBL is more common internationally (Peppol uses it), while CII is used in hybrid formats like ZUGFeRD.
What are cbc: and cac: prefixes?
These are UBL namespace prefixes. cbc: (Common Basic Components) contains simple values, cac: (Common Aggregate Components) contains complex structures.
Which standards are built on UBL?
Peppol BIS Billing 3.0, XRechnung (UBL variant), A-NZ PEPPOL (Australia/New Zealand), and Singapore InvoiceNow all use UBL 2.1 as their base syntax. Our validator checks generic UBL compliance—use format-specific validators for additional business rules.
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