Question 1

What is a PEPPOL validator?

Accepted Answer

A PEPPOL validator checks if your e-invoice complies with PEPPOL BIS Billing 3.0 and EN 16931 standards. It validates the XML structure, business rules, and country-specific requirements to ensure your invoice will be accepted by recipients on the PEPPOL network.

Question 2

How do I validate a PEPPOL invoice?

Accepted Answer

Upload your XML invoice file or paste the XML content into the validator. The tool automatically detects the invoice format (PEPPOL BIS, KSeF, NLCIUS, etc.) and validates it against the appropriate rules. Results show any errors with human-readable explanations.

Question 3

Is the PEPPOL validator free?

Accepted Answer

Yes, this PEPPOL validator is completely free to use. You can validate unlimited invoices without creating an account or paying any fees.

Question 4

What invoice formats are supported?

Accepted Answer

The validator supports PEPPOL BIS Billing 3.0, EN 16931 (European standard), KSeF FA(2) (Polish e-invoicing), NLCIUS (Dutch), XRechnung (German), and other UBL 2.1 invoice formats. Both Invoice and CreditNote document types are supported.

Question 5

Can I validate KSeF invoices?

Accepted Answer

Yes, the validator fully supports KSeF FA(2) format used in Poland's Krajowy System e-Faktur. It validates against Polish e-invoicing requirements including the FA(2) schema and Polish business rules.

Question 6

Can I validate XRechnung invoices?

Accepted Answer

Yes, German XRechnung invoices are supported. The validator checks compliance with XRechnung specifications required for invoicing German public sector entities, including Leitweg-ID validation.

Question 7

What does EN 16931 validation check?

Accepted Answer

EN 16931 is the European standard for electronic invoicing. The validator checks the semantic data model, mandatory fields, business rules, and syntax bindings to ensure your invoice complies with EU e-invoicing requirements.

Question 8

Why did my invoice fail validation?

Accepted Answer

Common reasons include missing mandatory fields (like VAT number or line items), incorrect data formats (dates, amounts), invalid tax calculations, or schema violations. The validator provides human-readable explanations for each error to help you fix the issues.

Free PEPPOL Invoice Validator - Validate UBL, KSeF, NLCIUS, and XRechnung

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