BR-CO-14
The invoice total VAT amount (BT-110) must equal the sum of the tax amounts of all VAT categories (BT-117).
- Severity
- Error
- Applies to
- CII, UBL
- Rule set
- v2026-01-31
Official rule text
Invoice total VAT amount (BT-110) = Σ VAT category tax amount (BT-117).
Why it happens
Classic when BT-110 is computed from individually rounded per-line taxes while the category amounts come from the taxable bases — the two routes drift apart by rounding differences.
How to fix it
Compute BT-117 per category from its taxable base first, then form BT-110 as the exact sum of those category amounts — never as a separate, independent calculation.
NormAPI provides technical validation, not tax or legal advice.