UBL Validator
Validator
🇸🇮 Validate UBL Invoices for Slovenia
UBLPlannedPeppol
UBL 2.1 is planned in Slovenia. Slovenia adopted its B2B e-invoicing law (ZIERDED) in October 2025, effective January 1, 2028.
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
Slovenia E-Invoicing Requirements
Phase
Status
Scope
B2G
Live (Jan 2015)
All public sector suppliers
VAT e-reporting
Live (Jul 2025)
All VAT-registered businesses
B2B mandatory
Jan 2028
All business entities (incl. cross-border)
Required CIUSe-SLOG 2.0 (Slovenian national standard, EN 16931 compliant)
Government portalUJP eRačun (B2G platform)
Routing identifierDavčna številka (tax number) or Peppol ID
PeppolYes — Peppol recognized as a legitimate B2B exchange channel
Slovenia's approach is notable for what it doesn't require: no CTC reporting, no clearance, no mandatory government portal for B2B.
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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