Invoice Total Mismatch: Why ERPs Reject Invoices
A mismatch between line items, tax amounts, and the invoice total is one of the most common structural reasons ERP systems reject invoices.
Typical issue: the sum of line items plus tax does not exactly match the declared total —
often due to rounding, currency, or formatting errors.
Common causes of total mismatches
- Rounding differences across line items
- Tax calculated per line vs tax calculated on subtotal
- Manual edits after export from accounting software
- Currency conversion inconsistencies
- Hidden decimals or formatting differences
How to fix it before ERP submission
- Recalculate totals using the same method as the ERP
- Ensure consistent rounding rules
- Verify tax calculation logic
- Check currency precision and conversion rates