Why the sync error occurs
This error occurs when a vendor credit in Bill.com is attempting to sync to QuickBooks Online, but the value in the Ref # field is already in use on a vendor credit in QuickBooks Online.
How to fix the sync error
If the credit doesn't exist in QuickBooks Online
- Change the vendor credit Ref # in Bill.com to a unique number
- Sync again
If the credit already exists in QuickBooks Online or if no duplicate number is found in QuickBooks Online
Contact Customer Support for assistance.