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`BR-CO-11`:Line amount calculation error

Line net amount must equal quantity × price, adjusted for any line allowances/charges.

Fix this in your source system

MANUAL

Line amount calculations (quantity x price) must match your order/delivery documents. Discrepancies may indicate pricing or quantity errors.

See the step-by-step instructions below to fix this error manually.

Why This Error Matters

Invoice rejected. Calculation errors prevent proper total verification.

How to Fix It

Get base amount

Quantity × PriceAmount

Apply allowances

Subtract line-level AllowanceCharge where ChargeIndicator=false

Apply charges

Add line-level AllowanceCharge where ChargeIndicator=true

Set LineExtensionAmount

Result should match exactly (watch rounding)

Code Example

<cac:InvoiceLine>
  <cbc:InvoicedQuantity unitCode="C62">10</cbc:InvoicedQuantity>
  <cbc:LineExtensionAmount currencyID="EUR">90.00</cbc:LineExtensionAmount>
  <cac:AllowanceCharge>
    <cbc:ChargeIndicator>false</cbc:ChargeIndicator>
    <cbc:Amount currencyID="EUR">10.00</cbc:Amount>
  </cac:AllowanceCharge>
  <cac:Price>
    <cbc:PriceAmount currencyID="EUR">10.00</cbc:PriceAmount>
  </cac:Price>
  <!-- 10 × 10.00 - 10.00 = 90.00 ✓ -->
</cac:InvoiceLine>

Technical Details

XPath: /Invoice/cac:InvoiceLine/cbc:LineExtensionAmount

Common Causes

Sum of document allowances does not match BT-107
AllowanceTotalAmount calculation mismatch
Individual allowance amounts don't sum to total
Allowance added/removed without updating total
Rounding error in allowance sum calculation

Commonly Seen In

All invoicing software

Frequently Asked Questions

Line net amount must equal quantity × price, adjusted for any line allowances/charges.

Verify: LineExtensionAmount = Quantity × UnitPrice ± Allowances/Charges. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.

Yes, BR-CO-11 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-11 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including line amount calculation error.

BR-CO-11 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Related Errors

BR-14

Invoice line net amount required

BR-CO-10

Sum of VAT category amounts incorrect

Last updated: 18 January 2026

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BR-CO-11:Line amount calculation error