QuickBooks Online sync error: Vendor, account, customer, item, class or location referenced in this bill has been deleted in QuickBooks Online

Why the sync error occurs

This error occurs when the account, customer, item, vendor, and/or class on a bill (or the bill itself that's attempting to sync) has been deleted in QuickBooks Online and the sync can't update or create the bill.

How to fix the sync error

  1. In QuickBooks Online, verify that the vendor and any accounts, customers, items, or classes listed on the payment has been deleted or determine if the bill was deleted
  2. Once the deleted entity is located, reactivate it
  3. Sync again