Mailcenter Add-on

Validating e-invoices – Check ZUGFeRD & XRechnung

Your free validator for e-invoices

You’ve come to the right place! Check in seconds whether your XRechnungen or ZUGFeRD invoices are compliant. You can find the validator directly below this text. Simply drag and drop your file into the field to start the check.
The validator is suitable for all versions of XRechnung from version 3.0 onwards as well as for all versions of ZUGFeRD invoices.

Datei (.xml oder .pdf) zum Hochladen hierher ziehen

* Your file will be processed exclusively for the technical validation of the e-invoice. The check is carried out automatically on the basis of the standards of KoSIT and Mustang Validator in an Azure cloud environment. There is no permanent storage or content evaluation. By uploading, you agree to our privacy policy .

The switch to electronic invoices such as ZUGFeRD and XRechnung optimizes the invoicing process, saves time and reduces costs. But in order for the digital documents to be processed correctly by the recipient systems, they must meet a certain standard.

This is where validation comes into play. A validation checks whether your e-invoice is formally correct and compliant with the respective specification (e.g. EN 16931). Successful verification is key to avoiding rejections by the recipient and associated payment delays.

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ZUGFeRD and XRechnung: Two standards for different purposes

In Germany, two main formats for e-invoices have been established:

XRechnung: As a pure XML format, XRechnung is the binding standard for invoices to public administration in Germany. It is designed for fully automated processing.

-> Learn more about XRechnung here

TRAINFeRD: This hybrid format combines a PDF invoice with embedded XML data. It is particularly flexible and is ideal for business transactions between companies (B2B) and with private customers (B2C).

-> Read more about ZUGFeRD here

Both formats enable efficient digital invoice processing, but both must be created correctly in order to fully exploit their advantages.

Formats of electronic invoices at a glance

Simple mnemonic aid:

  • XRechnungen → “Government XML in Germany”
  • ZUGFeRD invoices → “PDF invoice + built-in EU XML”
  • EN16931 → “set of rules behind it”

Practical examples:

  • Invoices to tax advisors or companies → ZUGFeRD very popular
  • Invoice to German authority → XRechnung (mandatory)
  • EU trade without authorities → EN16931 (UBL/CII or ZUGFeRD possible)

Overview:

Format Standard / Rulebook Application area Technical format Document Type Briefly explained
EN16931 (UBL Invoice) EN 16931 EU-wide Universal Business Language (UBL) Invoice Pure XML invoice according to EU standard
EN16931 (CII) EN 16931 EU / international Cross Industry Invoice (CII) Invoice / Credit Note Alternative XML structure to UBL
XRechnung (UBL/CII) XBill Germany (B2G) UBL or CII Invoice / Credit Note Strictest German obligation for authorities
ZUGFeRD (PDF + XML) ZUGFeRD EU + Germany PDF/A-3 + embedded XML (EN16931 compliant) Invoice / Credit Note Hybrid: Humans read PDFs, machines read XML

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Make your SAP system fit for e-invoicing!

The free validator is the first step. The next is to fully automate your invoicing processes. Our Invoice Pro add-on for SAP ECC and S/4HANA takes your invoice processing to the next level:

  • Compliant: Easily meet the requirements for B2B and B2G.
  • Fully integrated: Send and receive e-invoices (XRechnung, ZUGFeRD) directly in SAP without media discontinuities.
  • Efficient: Benefit from automated processes, fewer errors and significantly reduced costs.
  • Quick start: Thanks to predefined settings, the add-on is ready for use in no time at all.

Optimize your processes now and put an end to manual effort. Discover the advantages of our SAP e-invoice add-on!