BR-DEC-18:Payable amount: max 2 decimals
PayableAmount allows maximum 2 decimal places.
Engine Classification
Round amount due for payment to 2 decimal places per EN16931
Confidence: 95% · Applied automatically in pipeline
What is BR-DEC-18?
BR-DEC-18 is a fatal validation rule defined in the EN 16931 specification. It validates the PayableAmount element 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: //cac:LegalMonetaryTotal/cbc:PayableAmount
Why This Error Matters
Invoice will be rejected by validation. Amount due is the actual payment amount and must have proper precision for payment processing.
BR-DEC-18 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.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: BR-DEC-18
- ·Specification: EN 16931
How to Fix It
Check payable
This is the amount to be paid
Round
Must be 2 decimals for payment
Before / After
<cac:LegalMonetaryTotal> <cbc:PayableAmount>100.123456</cbc:PayableAmount> <!-- Too many decimal places --> </cac:LegalMonetaryTotal>
<cac:LegalMonetaryTotal> <cbc:PayableAmount>100.00</cbc:PayableAmount> <!-- Correct decimal places --> </cac:LegalMonetaryTotal>
Technical Reference
//cac:LegalMonetaryTotal/cbc:PayableAmountCommon Causes
- ·Calculation from total minus prepaid produced extra decimals
- ·Rounding adjustment created excess precision
- ·ERP exports amount due with full precision
- ·Component amounts not properly rounded
- ·Currency formatting not applied to final amount
Seeing this in production? The API handles BR-DEC-18 automatically. See the fix response →
Frequently Asked Questions
PayableAmount allows maximum 2 decimal places.
Round final payable amount to 2 decimals. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, BR-DEC-18 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.
Many instances of BR-DEC-18 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including payable amount: max 2 decimals.
See Also
Related Errors
Last updated: 27 February 2026
Handle BR-DEC-18 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.