Cannot sync the invoice as the invoice date if before the sync start date.
If you have chosen the invoice sync date as 25 Aug 2020 during initial setup and try to sync invoices before 25 Aug 2020 then, you may experience this error
Solution: Update the invoice dates manually in Quickbooks or contact support to ignore these invoices in subsequent syncs.
If you experience an error that is not listed above, contact Chargebee's support.