BT-21 - Invoice note subject code
A code qualifying the subject of the accompanying invoice note. It indicates the topic to which the free-text note relates.
BT-21 - Invoice note subject code
A code qualifying the subject of the accompanying invoice note. It indicates the topic to which the free-text note relates.
Definition
A code qualifying the subject of the accompanying invoice note. It indicates the topic to which the free-text note relates.
Syntax mapping
Where this term appears in each of the three EN 16931 syntaxes.
| Syntax | Path |
|---|---|
| UBL 2.1 | Not directly mapped |
| UN/CEFACT CII | rsm:ExchangedDocument/ram:IncludedNote/ram:SubjectCode |
| Factur-X / ZUGFeRD | Factur-X profile: BASIC WL |
The lowest Factur-X / ZUGFeRD profile in which this term is available.
Validation rules for this term
The EN 16931 / Peppol / XRechnung rules that reference this term.
Validate an invoice carrying this term
This term is defined by EN 16931. Check your invoice with the validator that matches your format:
Related terms
Source: CEN EN 16931-1 + CEN/TS 16931-3-2 (UBL) & -3-3 (CII) · Last verified: 2026-07-10
All business terms