Why the Sync Error occurs

This error occurs when a deleted account in Bill.com is trying to sync to QuickBooks Online (QBO), but the account is one of the special accounts QBO needs to operate, such as like __Uncategorized Income __and Uncategorized Expense.

How to Fix the Sync Error

These accounts cannot be deleted or edited in QBO. The only options are to re-activate the deleted account in Bill.com or to contact Customer Support to clear the error.