# E-Invoice Compliance Guides

Browse the main compliance guides for XRechnung, ZUGFeRD, PEPPOL, and EU requirements. Use them to verify format choices, routing, and validation before sending.

## E-Invoice Compliance Guides

Browse the main compliance guides for XRechnung, ZUGFeRD, PEPPOL, and EU requirements. Use them to verify format choices, routing, and validation before sending.

## Start here

If you are new, follow this order: pick your target format, confirm routing (PEPPOL vs portal), then validate before you send.

1. Choose the guide that matches what your recipient expects (often XRechnung or ZUGFeRD in Germany).
2. Cross-check identifiers (VAT, routing IDs) and mandatory fields for that jurisdiction.
3. Run validation on the structured output and fix BR-/PEPPOL findings before submission.

- convert
- validate
- api
- playground

## Guide

- [XRechnung Standard](/resources/compliance/xrechnung-standard) (Mandatory): German standard for electronic invoicing in the public sector
- [ZUGFeRD Format](/resources/compliance/zugferd-format) (Recommended): Hybrid PDF/XML format for structured electronic invoices
- [PDF/A-3 for ZUGFeRD](/resources/compliance/pdf-a3-zugferd) (Recommended): Why hybrid ZUGFeRD and Factur-X PDFs require an archival PDF/A-3 container
- [DIN EN 16931-1 Standard](/resources/compliance/din-en-16931-1-standard) (Mandatory): European semantic data model for electronic invoices
- [European E-Invoicing Mandate](/resources/compliance/european-e-invoicing-mandate) (Mandatory): EU-wide rollout and policy context for electronic invoicing
- [PEPPOL Network Guide](/resources/compliance/peppol-network-guide) (Recommended): Pan-European network for exchanging electronic documents
- [UBL (Universal Business Language)](/resources/compliance/ubl-universal-business-language) (Optional): XML-based standard for business documents used in international trade
- [CII (Cross Industry Invoice)](/resources/compliance/cii-cross-industry-invoice) (Optional): UN/CEFACT cross-industry invoice format
- [Leitweg-ID Validation](/resources/compliance/leitweg-id-validation) (Mandatory): Routing identifiers for German public-sector recipients and validation rules

## Related Articles

- [XRechnung Guide 2025: Complete Documentation](/blog/xrechnung-guide-2025)
- [XRechnung vs ZUGFeRD vs PDF: Which format fits your workflow?](/blog/xrechnung-vs-zugferd-vs-pdf)
- [Leitweg-ID guide](/blog/leitweg-id-guide)
- [Peppol and UBL guide](/blog/peppol-network-guide)
- [XRechnung Field Guide - Complete Overview](/resources/xrechnung)