QuickBooks Sync Error | Business Validation Error: For billable expenses, you must use an account of one of the following account types: expense, other expense, other current liabilities, other current assets, other assets, fixed assets, or COGS.

This QuickBooks Online error can appear when a billable expense uses an account type that is not permitted. For billable expenses, QuickBooks only accepts the following account types:

1. Expense
2. Other Expense
3. Other Current Liabilities
4. Other Current Assets
5. Other Assets
6. Fixed Assets
7. Cost of Goods Sold (COGS)
8. Ensure the account selected uses one of these account types.