BR-DEX-09:Third party payment calculation error. Amount due must equal: Total with VAT...
Fix: Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments.
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).
When this rule fires, the invoice is rejected by Peppol access points and never reaches 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 — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Rejected by XRechnung endpoints
- ·Error returned: BR-DEX-09
- ·Specification: XRechnung (Germany)
How to Fix It
Identify the issue in your invoice
Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments.
Correct this in your invoicing software
Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments.
Re-export and validate
Generate a new invoice export from your accounting system and re-validate to confirm BR-DEX-09 is resolved.
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 →
Frequently Asked Questions
Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments.
Third party payment calculation error. Amount due must equal: Total with VAT - Paid amount + Rounding + Sum of third party payments. You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, BR-DEX-09 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of BR-DEX-09 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
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Last updated: 14 April 2026
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This error involves a financial field that can't be auto-modified. We'll flag it with a clear diagnosis so you can fix it at the source.