Glossary
Key e-invoicing terms explained in plain language, from Peppol to EN 16931.
EN 16931
The European semantic standard every compliant e-invoice format is based on.
KSeF (Poland)
Poland's national e-invoicing system, mandatory in 2026.
PDP (France)
The registered private platforms at the heart of the French reform.
Peppol
The international network for exchanging e-invoices between certified access points.
Peppol BIS
The invoice specification used on the Peppol network.
SdI (Italy)
Italy's central exchange system, mandatory since 2019.
UBL
The OASIS XML vocabulary most e-invoice formats are built on.
UN/CEFACT CII
The second XML syntax allowed under the EU e-invoicing standard.
Verifactu (Spain)
Spain's certification regime for invoicing software.
ViDA
The EU package making e-invoicing and digital reporting mandatory for intra-EU B2B by 2030.
XRechnung
Germany's XML format for e-invoices, maintained by KoSIT.
ZUGFeRD / Factur-X
The hybrid PDF+XML e-invoice format used in Germany and France.
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