QuickBooks Online sync error: You must specify a different number. This number has already been used
Why the sync error occurs
This error occurs when the reference number (Ref#) on a Key CashFlow offline payment is already in use within QuickBooks Online or has been entered on a payment that is for more than one invoice.
How to fix the sync error
Void the offline payment and record a new offline payment with the correct reference number.
- Select the Payment confirmation number from the sync status page
- Select Void payment
- Select Yes to confirm
Record a new offline payment for the bill(s).
Alternatively, record the payment manually in QuickBooks Online and contact Customer Support to request the sync error be cleared.
Account Setup View all
Making Payments View all
Get Paid (Receivables) View all
QuickBooks Online View all
QuickBooks for Windows View all
NetSuite / Intacct View Intacct View NetSuite