QuickBooks Online Sync Error: A related object (vendor/customer/account/item) does not exist in Bill.com. Please ensure these objects are created/synced or resolve any sync errors for these related objects first.

Why the Sync Error occurs

This error occurs when something on a bill or invoice that is attempting to sync from QuickBooks Online (QBO) to Bill.com has been deleted from Bill.com, was never synced to Bill.com, or has a broken connection. This can occur with any item related to the transaction, such as accounts, items, classes, customers, vendors or the invoice/bill.

How to Fix the Sync Error

To resolve the issue, check the Chart of Account(s), Items, Locations, Classes, Vendor and any employees on the bill to verify that nothing is deleted or missing.

If the item is deleted:

  1. Reactivate the item in Bill.com
  2. Log in to QBO
  3. Click edit
  4. Save the item in QBO to trigger a sync update
  5. Sync to re-establish the connection

If the item does not exist in Bill.com:

  1. Log in to QBO
  2. Click edit
  3. Save the item in QBO to trigger a sync update
  4. Sync again