QuickBooks Online Sync Error: Business Validation Error: This transaction is matched to a downloaded transaction. If you want to change the account, you need to unmatch the transaction first.

Why the Sync Error occurs

This error occurs when a payment in Bill.com is voided or updated, but the payment is downloaded and matched to a register in QuickBooks Online (QBO) that is different from the Payment Account listed on the payment in Bill.com.

How to Fix the Sync Error

To resolve this sync error, follow these steps:

  1. Log in to Bill.com
  2. Click Payables
  3. Click Vendors
  4. Select the vendor associated with the payment
  5. Click the Payment Confirmation Number, which will bring up the Bill Payment Information screen
  6. Edit the Payment Account to match the account register the payment was downloaded to in QBO
  7. Click Save
  8. Sync again