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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. Contract reference

Reference

Contract reference

Identifier linking an invoice to a contract or framework agreement.

Explanation#

Frequently required in public sector and large enterprise billing.

Helps compliance, reporting, and dispute resolution.

This article treats Contract reference 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 Contract reference 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 Contract reference with the next useful reference pages and tools. These links are included to support a complete workflow, from understanding Document reference and Purchase order (PO) to validating or converting the invoice file.

Document reference

Link from an invoice to another document (order, contract, prior invoice).

Purchase order (PO)

Buyer-issued document ordering goods/services, often referenced by an invoice.

Purchase order (PO)Invoice line item
On this page
ExplanationRelated resourcesRelated terms

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