Why the Sync Error occurs

This error occurs when either the QuickBooks Online account trying to connect to sync is a Sandbox account or the QuickBooks Online account was recently upgraded from Sandbox to a full account.

How to Fix the Sync Error

To resolve this error, disconnect and reconnect the sync using the new QuickBooks Online Master Admin's login credentials:

1. Click Settings
2. Click Setup under Sync
3. Click Disconnect
4. Follow Steps 1 and 2 again to reach the Setup page
5. Click Connect
6. Reconnect the sync using the new QuickBooks Online Master Admin's login credentials

Note: On Bill Pay accounts, this error can occur if a user deletes or voids a payment in QuickBooks Online, but the payment cannot be voided in Bill Pay as it has cleared. Contact Customer Support to clear the error.