QuickBooks Online sync error: Invalid account type used Invalid account type: You cannot use this account to create items as the account is used by system to track the tax amount.

Why the sync error occurs

This error occurs when a Sales Tax type item created in Key CashFlow is attempting to sync to QuickBooks Online. Sales Tax must be created in QuickBooks Online and synced to Key CashFlow.

How to fix the sync error

  1. Delete the Sales Tax item in Key CashFlow
  2. Create the Sales Tax in QuickBooks Online directly
  3. Sync again

The Sales Tax entered in QuickBooks Online will sync to Key CashFlow as an item, which can then be used on invoices as a line item.