BR-CO-11: The header sum of allowances (BT-107) does not equal the actual sum of the…
What it means
The header sum of allowances (BT-107) does not equal the actual sum of the individual document-level allowance amounts (BT-92).
How to fix it
Recalculate BT-107 as the exact sum of all document-level allowance amounts and re-issue. Arithmetic mismatch -- reported, never auto-repaired.