QuickBooks Online sync error: Bill null: XXX cannot be created in Bill.com - Found multiple objects by search without integrationId: XXXXXX, XXXXXX

Why the sync error occurs

This error occurs when a bill is attempting to sync to Key CashFlow℠ from QuickBooks Online, but there are one or more bills with the same invoice number for the vendor in Key CashFlow.

How to fix the sync error

Compare the bills in Key CashFlow to the bills in QuickBooks Online and make sure they all have unique invoice numbers. Edit the invoice numbers as needed and sync again.

If you don't see any duplicate invoice numbers, please contact Customer Support.