How to fix BR-24

What this rule checks

The line net amount (BT-131, mapped to cbc:LineExtensionAmount) is the total value of the line before VAT. It is typically calculated as quantity times price, minus any line-level allowances plus any line-level charges. This value is required because the document-level totals are calculated from the sum of all line net amounts.

How to fix it

Add a cbc:LineExtensionAmount element to each cac:InvoiceLine with the line net amount and the correct currencyID attribute.

Common causes

• The cbc:LineExtensionAmount element is missing from an invoice line.
• The element exists but has no value or is set to an empty string.
• The currencyID attribute is missing from the amount element.
• The amount was placed in the wrong element (e.g. cbc:Amount instead of cbc:LineExtensionAmount).

Example: before (broken)

<cac:InvoiceLine>
  <cbc:ID>1</cbc:ID>
  <cbc:InvoicedQuantity unitCode="C62">10</cbc:InvoicedQuantity>
  <!-- cbc:LineExtensionAmount is missing -->
  <cac:Item>
    <cbc:Name>Widget A</cbc:Name>
  </cac:Item>
</cac:InvoiceLine>

Example: after (fixed)

<cac:InvoiceLine>
  <cbc:ID>1</cbc:ID>
  <cbc:InvoicedQuantity unitCode="C62">10</cbc:InvoicedQuantity>
  <cbc:LineExtensionAmount currencyID="EUR">500.00</cbc:LineExtensionAmount>
  <cac:Item>
    <cbc:Name>Widget A</cbc:Name>
  </cac:Item>
</cac:InvoiceLine>

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