PEPPOL-EN16931-R055 - The two total VAT amounts must have the same sign
The total VAT amount (BT-110) and the same total expressed in the accounting currency (BT-111) describe one and the same tax. They must therefore be both positive or both negative.
PEPPOL-EN16931-R055 - The two total VAT amounts must have the same sign
The total VAT amount (BT-110) and the same total expressed in the accounting currency (BT-111) describe one and the same tax. They must therefore be both positive or both negative. This is a Peppol BIS Billing 3.0 rule. It applies on top of the EN 16931 core standard, on invoices exchanged over the Peppol network.
What this rule checks
The total VAT amount (BT-110) and the same total expressed in the accounting currency (BT-111) describe one and the same tax. They must therefore be both positive or both negative.
How to fix it
Correct the sign of the cbc:TaxAmount in the accounting currency so that it follows the sign of the amount in invoice currency.
Validate against this rule
This rule is part of EN 16931. Check your invoice with the validator that matches your format:
Related rules
Source: OpenPeppol BIS Billing 3.0 · Last verified: 2026-07-10
All validation rules