BR-CO-12 error
What this rule checks
Explanation
If the invoice has document-level charges (fees applied to the whole invoice, not a specific line, e.g. a shipping surcharge), the header field for their combined total (BT-108) must equal the sum of each individual document-level charge amount (BT-99). This is the charge-side counterpart to BR-CO-11.
How to fix it
Recalculate the sum of all document-level AllowanceCharge amounts where ChargeIndicator is true (a charge, not an allowance), and make sure the header charge total matches it exactly.
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