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Documentation overview
Glossary
E
EN 16931
E-reporting
C
CIUS
CII
Code list
Credit note
Contract reference
X
XRechnung
XML Schema (XSD)
XML
Z
ZUGFeRD
F
Factur-X
U
UBL
Unit code
P
PEPPOL
PEPPOL BIS
Participant ID
PDF/A-3
Payment means
Purchase order (PO)
A
Access Point
Allowance / charge
S
SMP
SML
L
Leitweg-ID
K
KoSIT
V
Validation
VAT ID
ViDA
B
Business Term (BT)
Business Group (BG)
BIC
R
Reverse charge
Real-time reporting
T
Tax category
I
IBAN
Invoice type code
Invoice line item
D
Document reference
Q
QR code payment
Code Lists
XRechnung Fields
ZUGFeRD Profiles
  3. E-Invoicing Resources
  5. Glossary
  7. CIUS

Reference

CIUS

Country or sector specific usage specification that constrains EN 16931.

Explanation#

CIUS rules typically tighten cardinalities, enforce identifiers, or restrict code lists.

XRechnung is a well-known CIUS for Germany (B2G).

This article treats CIUS as a practical reference, not just a navigation page. It explains the term or workflow in context, shows why it matters for European e-invoicing, and connects the topic to invoice creation, validation, routing, archiving, and ERP implementation decisions.

Related resources#

Related resources connects CIUS with the next useful reference pages and tools. These links are included to support a complete workflow, from understanding XRechnung guide to validating or converting the invoice file.

XRechnung guide

Related terms#

Related terms connects CIUS with the next useful reference pages and tools. These links are included to support a complete workflow, from understanding EN 16931, XRechnung and KoSIT to validating or converting the invoice file.

EN 16931

European standard defining the semantic data model for e-invoices.

XRechnung

German e-invoicing specification for the public sector based on EN 16931.

KoSIT

German coordination body; commonly refers to the BR-DE validation rules/validator for XRechnung.

Validation

Process of checking an e-invoice against syntax rules and business rules.

EN 16931XRechnung
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ExplanationRelated resourcesRelated terms

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