Skip to main content
Invoice-Converter.comInvoice-Converter
BlogPricing
Convert InvoiceConvert
Convert
⌘K
Documentation overview
Understand formats and standards
Compliance Guides
XRechnung Standard
ZUGFeRD Format
PDF/A-3 for ZUGFeRD
CII Cross Industry Invoice
UBL Universal Business Language
DIN EN 16931-1 Standard
PEPPOL Network
Country and regulatory rules
EU E-Invoicing Mandate
EU E-Invoicing
EU e-invoicing in 2026: what to implement (and why)
EU top markets playbook (DE, FR, IT, ES, PL, NL)
PEPPOL in the EU: how exchange actually works
CTC/clearance and portals in the EU: how to build reliable integrations
Country Guides
Germany
France
Italy
Spain
Poland
Netherlands
Belgium
Austria
Denmark
Sweden
Finland
Fix validation and submission issues
Leitweg-ID Validation
Support playbooks
Support
Why invoices need review
PDF readiness
Source data readiness
Attachments and service descriptions
API errors
API automation
Handling schema errors
Review validation help
Support
Missing information
Buyer reference
Payment and IBAN
VAT and reverse charge
Totals and rounding
Prepayments
Line items
ZUGFeRD PDF warnings
Validation playbooks
Observed validation fixes
Due date or terms
Bank transfer IBAN
PDF/A-3 readiness
VATEX exemption reason
Review vs download
Public test invoice fixture library
Valid XRechnung UBL basic invoice
Invalid XRechnung missing payment terms
Factur-X/ZUGFeRD EN 16931 CII XML
XRechnung rounding and IBAN edge case
KoSIT Validator Errors
ERROR
BR-DE-1
BR-DE-2
BR-DE-3
BR-DE-4
BR-DE-5
BR-DE-6
BR-DE-7
BR-DE-8
BR-DE-9
BR-DE-10
BR-DE-11
BR-DE-14
BR-DE-15
BR-DE-16
BR-CO-3
BR-CO-4
BR-CO-9
BR-CO-10
BR-CO-11
BR-CO-13
BR-CO-14
BR-CO-15
BR-CO-16
BR-CO-17
BR-CO-25
BR-CO-26
BR-S-1
BR-S-5
BR-S-8
BR-61
BR-AE-02
BR-AE-10
BR-E-01
BR-E-05
BR-DE-19
BR-05
BR-22
BR-23
BR-24
BR-25
BR-26
BR-47
BR-57
BR-DE-22
BR-DE-30
BR-DE-31
PEPPOL-EN16931-R001
PEPPOL-EN16931-R010
PEPPOL-EN16931-R020
PEPPOL-EN16931-R046
PEPPOL-EN16931-R120
PEPPOL-EN16931-R130
WARNING
BR-DE-17
BR-DE-18
BR-DE-20
BR-DE-21
BR-DE-26
BR-DE-27
BR-DE-28
Look up reference data
Glossary
E
EN 16931
E-reporting
e-Factura RO
EAS (Electronic Address Scheme)
ebInterface
C
CIUS
CII
Code list
Credit note
Contract reference
Chorus Pro
Codice Destinatario
X
XRechnung
XML Schema (XSD)
XML
Z
ZUGFeRD
F
Factur-X
Finvoice
U
UBL
Unit code
P
PEPPOL
PEPPOL BIS
Participant ID
PDF/A-3
Payment means
Purchase order (PO)
PDP (Plateforme de Dématérialisation Partenaire)
A
Access Point
Allowance / charge
S
SMP
SML
Schematron
SDI (Sistema di Interscambio)
Svefaktura
L
Leitweg-ID
K
KoSIT
KSeF
KvK number
V
Validation
VAT ID
ViDA
VeriFactu
ViDA Pillar 1: Digital Reporting Requirements
ViDA Pillar 2: Single VAT Registration
ViDA Pillar 3: Platform Economy
B
Business Term (BT)
Business Group (BG)
BIC
R
Reverse charge
Real-time reporting
Real-time invoice reporting (RTIR)
T
Tax category
TicketBAI
I
IBAN
Invoice type code
Invoice line item
ISO 6523
D
Document reference
D-U-N-S Number
Digipoort
Q
QR code payment
G
GLN (Global Location Number)
O
OVT-tunnus
OIOUBL
N
NemHandel
Code Lists
Currency codes (common)
Country codes (common)
VAT category codes
Payment means type codes
Unit of measure codes (common)
Invoice type codes (common in XRechnung)
XRechnung Fields
Invoice basics
BT-1
BT-2
BT-3
BT-5
BT-6
BT-7
BT-8
BT-10
BT-11
BT-12
BT-14
BT-15
BT-16
BT-17
BT-18
BT-19
BT-21
BT-22
BT-23
BT-24
BT-25
BT-26
Delivery and payment
BT-9
BT-13
BT-20
BT-59
BT-60
BT-61
BT-70
BT-71
BT-72
BT-73
BT-74
BT-75
BT-76
BT-77
BT-78
BT-79
BT-80
BT-81
BT-82
BT-83
BT-84
BT-85
BT-86
BT-87
BT-88
BT-89
BT-90
BT-91
Seller details
BT-27
BT-28
BT-29
BT-30
BT-31
BT-32
BT-33
BT-34
BT-35
BT-36
BT-37
BT-38
BT-39
BT-40
BT-41
BT-42
BT-43
BT-62
BT-63
BT-64
BT-65
BT-66
BT-67
BT-68
BT-69
Buyer details
BT-44
BT-45
BT-46
BT-47
BT-48
BT-49
BT-50
BT-51
BT-52
BT-53
BT-54
BT-55
BT-56
BT-57
BT-58
Discounts and charges
BT-92
BT-93
BT-94
BT-95
BT-96
BT-97
BT-98
BT-99
BT-100
BT-101
BT-102
BT-103
BT-104
BT-105
Taxes and totals
BT-106
BT-107
BT-108
BT-109
BT-110
BT-111
BT-112
BT-113
BT-114
BT-115
BT-116
BT-117
BT-118
BT-119
BT-120
BT-121
BT-122
BT-123
BT-124
BT-125
Line items
BT-126
BT-127
BT-128
BT-129
BT-130
BT-131
BT-132
BT-133
BT-134
BT-135
BT-136
BT-137
BT-138
BT-139
BT-140
BT-141
BT-142
BT-143
BT-144
BT-145
BT-146
BT-147
BT-148
BT-149
BT-150
BT-151
BT-152
BT-153
BT-154
BT-155
BT-156
BT-157
BT-158
BT-159
BT-160
BT-161
BT-162
BT-163
ZUGFeRD Profiles
MINIMUM
BASIC WL
BASIC
EN 16931
EXTENDED
Compare formats and tools
Comparisons
XRechnung vs ZUGFeRD
PDF24 Tools
sevDesk
Integrate and implement
Platform incident help
Support
Temporary unavailable
Missing result
Validation unavailable
Browser errors
Account and rate limits
Credits and subscriptions
Authoritative validation
ERP export validation guides
DATEV
Lexware
SAP Business One
Odoo
Microsoft Dynamics
Trust & Security
Developer API
  1. E-Invoicing Resources
  2. XRechnung Fields
  3. BT-22

Reference

Markdown export

BT-22 Invoice Note

Free text note at invoice level containing supplementary information that cannot be expressed in structured fields. Multiple notes are allowed, each potentially categorized by BT-21 (Invoice note subject code). Used for additional instructions, terms, disclaimers, or clarifications.

BT Reference CardQuick answerIn plain languageWhat you usually enter hereWhat goes wrong oftenExamples in contextValid ExamplesInvalid ExamplesRelated FieldsXML mapping and field factsXML ImplementationWhy the standard cares about this fieldFAQOfficial sources and tools

BT-22 (Invoice note) is free-text commentary attached to the document. Optional under EN 16931, it may carry subject-coded notes (BT-21 subject code) such as delivery confirmations or contract references. Use plain text — XML-special characters must be entity-escaped exactly once. Example: "Delivery completed on 2024-03-25".

BT-22 · EN 16931 / XRechnung 3.x

BT Reference Card#

Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.

BT code
BT-22
Name
Invoice Note
Cardinality
Optional (O)
Business group
Document
Data type
Text
Example value
Delivery completed on 2024-03-25; consolidated billing for week 12.

Quick answer#

Free text note at invoice level containing supplementary information that cannot be expressed in structured fields. Multiple notes are allowed, each potentially categorized by BT-21 (Invoice note subject code). Used for additional instructions, terms, disclaimers, or clarifications.

Invoice basics

Core document identifiers, dates, process identifiers, and high-level invoice context.

Quick actions

Validate XMLConvert invoice

In plain language#

Free text note at invoice level containing supplementary information that cannot be expressed in structured fields. Multiple notes are allowed, each potentially categorized by BT-21 (Invoice note subject code). Used for additional instructions, terms, disclaimers, or clarifications.

Free text note at invoice level containing supplementary information that cannot be expressed in structured fields. Multiple notes are allowed, each potentially categorized by BT-21 (Invoice note subject code). Used for additional instructions, terms, disclaimers, or clarifications.

Essential for communicating additional invoice-related information that doesn't fit in structured fields. Common uses include delivery instructions, payment references, legal disclaimers, project information, special terms, and contact details. In German business practice, often used for Skonto terms, delivery confirmations, and compliance statements.

What you usually enter here#

Free text with UTF-8 encoding, no specific format requirements

Typical valid values include: Payment reference: Order #12345, Delivery completed on 2025-01-15, Bei Fragen wenden Sie sich an: support@example.de, This invoice contains confidential information

Optional according to EN 16931-1. However, may be required for specific legal compliance (e.g., German trade law references, data protection notices, or contractual clauses). Notes should not contradict structured data and must comply with applicable business and tax regulations.

What goes wrong often#

Avoid values like: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA, , <script>alert("test")</script>, Note withnull characters

Examples in context#

Essential for communicating additional invoice-related information that doesn't fit in structured fields. Common uses include delivery instructions, payment references, legal disclaimers, project information, special terms, and contact details. In German business practice, often used for Skonto terms, delivery confirmations, and compliance statements.

Optional according to EN 16931-1. However, may be required for specific legal compliance (e.g., German trade law references, data protection notices, or contractual clauses). Notes should not contradict structured data and must comply with applicable business and tax regulations.

Valid Examples#

Use these points as the practical checks for this section.

  • Payment reference: Order #12345
  • Delivery completed on 2025-01-15
  • Bei Fragen wenden Sie sich an: support@example.de
  • This invoice contains confidential information
  • Skonto 2% bei Zahlung innerhalb 10 Tagen
  • Special delivery instructions: Loading dock B
  • Project completion milestone achieved
  • Rechnung gemäß § 14 UStG

Invalid Examples#

Use these points as the practical checks for this section.

  • AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  • <script>alert("test")</script>
  • Note withnull characters

Related Fields#

Essential for communicating additional invoice-related information that doesn't fit in structured fields. Common uses include delivery instructions, payment references, legal disclaimers, project information, special terms, and contact details. In German business practice, often used for Skonto terms, delivery confirmations, and compliance statements.

BT-21 Invoice note subject code
BT-20 Payment Terms
BT-33 Seller additional legal information

XML mapping and field facts#

Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.

Field ID:

BT-22

Data Type:

text

Cardinality:

0..n

Requirement:

Optional

Max Length:

5000 characters

Since Version:

Optional

XML Implementation#

UBL 2.1 Syntax
/Invoice/cbc:Note
CII (UN/CEFACT) Syntax
/rsm:CrossIndustryInvoice/rsm:ExchangedDocument/ram:IncludedNote/ram:Content

Why the standard cares about this field#

Business Context

Essential for communicating additional invoice-related information that doesn't fit in structured fields. Common uses include delivery instructions, payment references, legal disclaimers, project information, special terms, and contact details. In German business practice, often used for Skonto terms, delivery confirmations, and compliance statements.

Legal Requirement

Optional according to EN 16931-1. However, may be required for specific legal compliance (e.g., German trade law references, data protection notices, or contractual clauses). Notes should not contradict structured data and must comply with applicable business and tax regulations.

FAQ#

When should I use Invoice Note (BT-22) instead of structured fields?

Use BT-22 for information that cannot be expressed in existing structured fields, such as delivery instructions, special terms, legal disclaimers, or additional contact information. Always prefer structured fields when available (e.g., use BT-20 for payment terms, not BT-22).

Can I include multiple invoice notes?

Yes, BT-22 has cardinality 0..n, meaning multiple notes are allowed. Each note can be categorized using BT-21 (Invoice note subject code) for better organization and processing.

What is the relationship between BT-21 and BT-22?

BT-21 (Invoice note subject code) provides a three-letter code to categorize the content of BT-22 (Invoice note). For example, "AAI" for general information, "PMT" for payment-related notes, or "DEL" for delivery instructions. BT-21 is optional but helps automated processing.

Are there any restrictions on what I can include in invoice notes?

Avoid contradicting structured data, include only invoice-relevant information, respect the maximum length (typically 5000 characters), ensure legal compliance, and avoid sensitive personal data unless necessary for invoice processing.

Can invoice notes contain special characters or multiple languages?

Yes, BT-22 supports UTF-8 encoding, allowing special characters, accents, and multiple languages. However, ensure your invoice processing system can handle the character encoding properly.

Should I include Skonto terms in BT-22 or BT-20?

Skonto (early payment discount) terms should primarily go in BT-20 (Payment Terms) as they are structured payment conditions. Use BT-22 only for additional context or clarifications that cannot be expressed in BT-20.

How do German public authorities handle invoice notes?

German public authorities can process invoice notes in XRechnung format. However, critical information should be in structured fields when possible. Notes are often used for compliance references (e.g., "Rechnung gemäß § 14 UStG") or project-specific information.

Can I use invoice notes for marketing or promotional content?

While technically possible, invoice notes should focus on invoice-relevant information. Marketing content is generally not appropriate and may violate business communication standards or data protection regulations. Keep notes professional and invoice-specific.

Official sources and tools#

KoSIT Validator
Invoice Converter
XRechnung Standard
Test Suite
BT-21BT-23
On this page
BT Reference CardQuick answerIn plain languageWhat you usually enter hereWhat goes wrong oftenExamples in contextValid ExamplesInvalid ExamplesRelated FieldsXML mapping and field factsXML ImplementationWhy the standard cares about this fieldFAQOfficial sources and tools

Invoice-Converter.com

Helping businesses across Europe convert invoices to XRechnung and other e-invoice formats with validation support. Review edge cases before submission.

20,000+ invoices processed
Fast & Secure
Trusted by hundreds

Features

Convert PDFs & create

  • PDF to XRechnung
  • PDF to UBL
  • PDF to XRechnung (CII)
  • PDF to ZUGFeRD
  • PDF to Factur-X
  • Create XRechnung
  • XRechnung to PDF

View & validate

  • XRechnung/XML Viewer
  • XRechnung Validator

Quick Links

  • Resources
  • Trust & Security Center
  • Developer API Documentation
  • Blog
  • FAQ
  • Pricing
  • Climate Contribution

Legal

  • Imprint
  • Privacy Policy
  • Data Processing Agreement
  • Terms & Conditions
  • Money-Back Guarantee

Get in Touch

contact@invoice-converter.com
Start Converting
© 2026 Invoice-Converter.com.Made with in Europe
GDPR Compliant
German Server