BR-DEC-04:Line allowance: max 2 decimals
Invoice line allowance amount allows max 2 decimal places.
Engine Classification
Financial or legal field · Modification blocked by policy
Reason: Invoice line allowance amounts must have maximum 2 decimal places. Automatic rounding of financial amounts could cause calculation discrepancies. Fix the allowance amount in your source system to use proper 2-decimal precision.
What is BR-DEC-04?
BR-DEC-04 is a fatal validation rule defined in the en16931 specification. It validates the Amount element under InvoiceLine > AllowanceCharge in the UBL invoice XML.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Target path: XPath: /Invoice/cac:InvoiceLine/cac:AllowanceCharge/cbc:Amount
Why This Error Matters
Line amounts need proper precision.
BR-DEC-04 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
Validator Behavior
- ·Causes invoice rejection
- ·Fails EN 16931 business rule validation
- ·Error returned: BR-DEC-04
- ·Specification: en16931
How to Fix It
Check line allowances
Amount decimal places
Round
2 decimal maximum
XML Example
Generic example based on the rule's target XPath. Your actual XML structure may differ.
<!-- Missing or empty element triggers cbc:Amount error --> <cbc:Amount></cbc:Amount>
<!-- Provide the required value --> <cbc:Amount>VALID_VALUE</cbc:Amount>
Technical Reference
XPath: /Invoice/cac:InvoiceLine/cac:AllowanceCharge/cbc:AmountCommon Causes
- ·Percentage calculation creates decimals
Seeing this in production? The API handles BR-DEC-04 automatically. See the fix response →
Frequently Asked Questions
Invoice line allowance amount allows max 2 decimal places.
Round line allowance to 2 decimals. Invoice Navigator can help identify and fix this issue.
Yes, BR-DEC-04 is a critical error that must be fixed.
See Also
Related Errors
Last updated: 18 January 2026
Handle BR-DEC-04 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.