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BR-CO-15:Tax exclusive amount calculation error
TaxExclusiveAmount must equal LineExtensionAmount + Document Charges - Document Allowances.
Fix this in your source system
MANUALTax exclusive amount must equal sum of line amounts plus charges minus allowances. Automatic correction could hide allocation errors.
See the step-by-step instructions below to fix this error manually.
Why This Error Matters
Invoice rejected. The gross total is what the buyer pays - it must be mathematically correct.
How to Fix It
1
Start with lines
Sum of LineExtensionAmount
2
Add charges
Add document-level AllowanceCharge where ChargeIndicator=true
3
Subtract allowances
Subtract where ChargeIndicator=false
4
Set result
Equals TaxExclusiveAmount
Before & After Fix(BR-CO-15)
Before (Invalid)
Net: 1000, VAT: 210, but TaxInclusive shows 1200 (should be 1210)After (Valid)
Net: 1000, VAT: 210, TaxInclusive = 1210Before (Invalid)
Net: 1000, VAT: 210, but TaxInclusive shows 1200 (should be 1210)After (Valid)
Net: 1000, VAT: 210, TaxInclusive = 1210Compare the invalid XML structure with the corrected version. The fix ensures compliance with validation rules.
Code Example
<cac:LegalMonetaryTotal>
<cbc:LineExtensionAmount currencyID="EUR">1000.00</cbc:LineExtensionAmount>
<cbc:TaxExclusiveAmount currencyID="EUR">950.00</cbc:TaxExclusiveAmount>
<!-- 1000 - 50 document allowance = 950 -->
</cac:LegalMonetaryTotal>Technical Details
XPath: /Invoice/cac:LegalMonetaryTotal/cbc:TaxExclusiveAmountCommon Causes
- Tax inclusive amount calculation incorrect
- BT-112 does not equal BT-109 + BT-110
- TaxInclusiveAmount formula mismatch
- Manual gross total override broke calculation
- VAT amount changed without updating inclusive total
Commonly Seen In
All invoicing software
Frequently Asked Questions
TaxExclusiveAmount must equal LineExtensionAmount + Document Charges - Document Allowances.
Verify TaxExclusiveAmount calculation. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, BR-CO-15 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-CO-15 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including tax exclusive amount calculation error.
BR-CO-15 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.
See Also
Related Errors
Last updated: 18 January 2026
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