UBL-SR-05
EN 16931-1 layer: en16931
Checked against Peppol BIS Billing 3.0 2026.5
What does UBL-SR-05 mean? Payment terms shall occur maximum once
Why did my invoice fail UBL-SR-05?
The Payment terms group (BG-16), containing the textual description of payment terms (BT-20), may occur at most once per invoice. In UBL this is cac:PaymentTerms, and only a single instance is allowed at document level.
Official rule text
Payment terms shall occur maximum once
Common causes
- Each payment instalment or discount rule is emitted as its own cac:PaymentTerms element.
- Free-text terms are split across multiple cac:PaymentTerms/cbc:Note blocks instead of one.
- Template merges a description and a penalty clause into two separate PaymentTerms groups.
How do I fix it?
Consolidate into one group with combined text: <cac:PaymentTerms><cbc:Note>Net 30 days. 2% discount if paid within 10 days.</cbc:Note></cac:PaymentTerms> and delete the extra cac:PaymentTerms.
Related rules
UBL-SR-01 · UBL-SR-02 · UBL-SR-03 · UBL-SR-04 · UBL-SR-06 · UBL-SR-07 · UBL-SR-08 · UBL-SR-09
Check your invoice against this rule
Paste it into the live demo, or call POST /v1/validate. See the quickstart.