CII-SR-479

Explanation

In the invoice totals block, the 'sum of allowances' (BT-107) may appear only once. With several values it is unclear which one applies, and the totals checks become ambiguous.

How to fix

Output the value only once. (Typically a software-side issue, not user input — raise this with your invoicing software vendor; if you're receiving the invoice, ask the sender to address it with theirs.)