Blog
E-Invoicing in Accounting Software: Integration and Automation
How to seamlessly integrate e-invoices into your existing accounting software — from DATEV and lexoffice to custom ERP systems.
E-Invoicing for Small Businesses: What You Need to Know
Small businesses are also affected by mandatory e-invoicing. Learn about the deadlines, available exemptions, and how to prepare cost-effectively.
XRechnung Validation: The 10 Most Common Errors and How to Fix Them
BR-DE-15, BR-CO-17, BR-S-08 — cryptic error codes during XRechnung validation? Learn what the most common errors mean and how to resolve them.
Creating ZUGFeRD Invoices: A Step-by-Step Guide
ZUGFeRD combines PDF and machine-readable XML in a single file. Learn how to create compliant ZUGFeRD invoices — from required fields to validation.
Peppol in Germany: Sending E-Invoices via the European Network
Peppol is the European network for exchanging e-invoices. Learn how Peppol works, when it becomes mandatory, and how you can participate.
Leitweg-ID: What It Is and When You Need It
The Leitweg-ID is mandatory for e-invoices to public sector clients. Learn how it is structured, where to obtain it, and how to use it correctly.
UBL vs. CII: Comparing the Two E-Invoicing Syntaxes
UBL and CII are the two XML syntaxes behind XRechnung and ZUGFeRD. Learn about the technical differences and which syntax best suits your use case.
EN 16931 Explained: The European Standard for E-Invoices
EN 16931 is the foundation of all e-invoice formats in Europe. What the standard prescribes, which formats build on it, and why it matters for your business.
XRechnung vs. ZUGFeRD: Which E-Invoice Format Is Right for You?
XRechnung and ZUGFeRD are the two most important e-invoice formats in Germany. Learn the differences, pros and cons, and when to use which format.
Mandatory E-Invoicing from 2025: What Businesses Need to Know
Germany is introducing mandatory e-invoicing for B2B transactions. Learn about the deadlines, accepted formats, and how to prepare.
Receiving E-Invoices: How to Prepare Your Business
Since 2025, all businesses must be able to receive e-invoices. Learn what technical and organizational requirements you need to meet.