QuickBooks Online Sync Error: A business validation error has occurred while processing your request | Business Validation Error: This transaction is matched to a downloaded transaction.

Steps to Resolve:

1. In QuickBooks, open Banking → Bank Feed or Transactions → Bank Transactions and locate the matched bill payment.
2. Click Undo Match or Unmatch to remove the bank-feed match.
3. Edit or update the bill payment as needed.
4. If applicable, resync the bill payment from Ramp.
5. Verify status alignment: if the bill is marked as Paid in QuickBooks but not in Ramp, proceed to the next step.
6. In Ramp, mark the transaction as Synced to clear the error when QuickBooks already reflects the correct state.