E-Invoice ValidatorDE-R-015
The element "Buyer reference" (BT-10) shall be provided.
MistakeUBL
Official rules text
The element "Buyer reference" (BT-10) shall be provided.
Rules and regulations
- Peppol BIS Billing 3.0 (UBL) (v3.0.20)
Related rules
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Official rule sets up to date: EN 16931 1.3.17 · Peppol BIS 3.0.20 · XRechnung 3.0.2 (KoSIT 2.6.0). Last checked against the sources on 12.10.2026.