BR-DEX-09:Third party payment calculation error. Amount due must equal: Total with VAT...
Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments.
Engine Classification
Financial or legal field · Modification blocked by policy
What is BR-DEX-09?
BR-DEX-09 is a fatal validation rule defined in the XRechnung (Germany) specification (DEU national rules). It checks whether third party payment calculation error. amount due must equal: total with vat....
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.
Why This Error Matters
Invoice will be rejected. XRechnung extension rules for German invoices must be followed for proper processing by German public sector recipients.
BR-DEX-09 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
- ·Rejected by XRechnung endpoints
- ·Error returned: BR-DEX-09
- ·Specification: XRechnung (Germany)
Before / After
<Invoice> <!-- Issue: Amount due must equal: Total with VAT - Paid amount + Roundi --> </Invoice>
<Invoice> <!-- Issue resolved per XRechnung (Germany) --> </Invoice>
Technical Reference
Common Causes
- ·Amount due calculation incorrect with third party payments
- ·BT-115 formula wrong when BT-DEX-002 amounts present
- ·Third party payment amounts not added to due amount
- ·XRechnung extension payment calculation mismatch
- ·Manual amount override broke extended formula
Seeing this in production? The API handles BR-DEX-09 automatically. See the fix response →
Related Errors
Last updated: 27 February 2026
Handle BR-DEX-09 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.