UBL-SR-37
EN 16931-1 layer: en16931
Checked against Peppol BIS Billing 3.0 2026.5
What does UBL-SR-37 mean? Item price discount shall occur maximum once
Why did my invoice fail UBL-SR-37?
The item price on an invoice line may show one Item price discount (BT-147), the amount deducted from the gross price to reach the net price actually charged. EN 16931 allows at most one price allowance per line, so within cac:Price the cac:AllowanceCharge (which must be an allowance, cbc:ChargeIndicator = false) may occur only once.
Official rule text
Item price discount shall occur maximum once
Common causes
- Two cac:AllowanceCharge blocks under cac:Price on the same line.
- A charge (cbc:ChargeIndicator = true) mistakenly added under cac:Price, which is not permitted.
- Multiple stacked price discounts modelled separately instead of being netted into one.
How do I fix it?
Keep one price allowance: <cac:Price>...<cac:AllowanceCharge><cbc:ChargeIndicator>false</cbc:ChargeIndicator><cbc:Amount currencyID="EUR">2.00</cbc:Amount><cbc:BaseAmount currencyID="EUR">12.00</cbc:BaseAmount></cac:AllowanceCharge></cac:Price>.
Related rules
UBL-SR-01 · UBL-SR-02 · UBL-SR-03 · UBL-SR-04 · UBL-SR-05 · UBL-SR-06 · UBL-SR-07 · UBL-SR-08
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