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Warning

UBL-CR-464: Do not give an instalment due date in the payment terms

In short

Warning: worth checking.

UBL-CR-464 means the payment terms contain an instalment due date (InstallmentDueDate), and EN 16931 has no structured instalment schedule. Remove that element and describe the instalments in the payment terms text (BT-20).

On this page

What it means

The rule warns when the payment terms block (cac:PaymentTerms) of the invoice or credit note holds an InstallmentDueDate element, the date on which one instalment of a payment plan is due. EN 16931 provides one due date for the invoice (BT-9) and payment terms text (BT-20), rather than a structured instalment schedule. This is a warning.

Why it matters

EN 16931 does not use cbc:InstallmentDueDate in cac:PaymentTerms.

How to fix it

If the invoice is paid in instalments, write the schedule in the payment terms text, with the amount and the date of each instalment. Keep a single due date (BT-9) if you need one. If you build the XML yourself, delete cbc:InstallmentDueDate from cac:PaymentTerms. If your invoicing software has a payment plan option, copy its content into the payment terms text and export again. Check the corrected file again.

Once the file is corrected, check it again for free: Validate an invoice against EN 16931

Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice

The rule as published

A UBL invoice should not include the PaymentTerms InstallmentDueDate

Where this rule applies

Rule set Version
EN 16931 (UBL) 1.3.17
EN 16931 (UBL credit note) 1.3.17
XRechnung 3.0 (UBL) 3.0.2
XRechnung 3.0 (UBL credit note) 3.0.2
Peppol BIS Billing 3.0 (invoice) 2026.5
Peppol BIS Billing 3.0 (credit note) 2026.5
SI-UBL 2.0 / NLCIUS (invoice) 2.0.3.13
SI-UBL 2.0 / NLCIUS (credit note) 2.0.3.13
France CTC (UBL invoice) 1.4.0-04
France CTC (UBL credit note) 1.4.0-04
CIUS-RO UBL Invoice 1.0.9 1.0.9
CIUS-RO UBL Credit Note 1.0.9 1.0.9
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether UBL-CR-464 still fails, and which other rules do.

Updated 6 November 2026