UBL-SR-55
EN 16931-1 layer: en16931
Checked against Peppol BIS Billing 3.0 2026.5
What does UBL-SR-55 mean? An Invoice shall contain maximum one Payment Mandate (BG-19).
Why did my invoice fail UBL-SR-55?
The Direct debit mandate group (BG-19) holds the mandate reference (BT-89) and the debited account (BT-91) via cac:PaymentMeans/cac:PaymentMandate. EN 16931 permits at most one payment mandate per invoice, since a direct debit is executed under a single mandate.
Official rule text
An Invoice shall contain maximum one Payment Mandate (BG-19).
Common causes
- cac:PaymentMandate appears in more than one cac:PaymentMeans block.
- A duplicated PaymentMeans element repeats the mandate.
- Two different mandate references were included on one invoice.
How do I fix it?
Include a single mandate: one <cac:PaymentMandate><cbc:ID>MNDT-0099</cbc:ID>...</cac:PaymentMandate>, and remove any duplicates.
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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