Why the Sync Error occurs
This error occurs when a vendor credit in Bill.com is attempting to sync to QuickBooks Online (QBO), but the reference number is already in use on a vendor credit in QBO.
How to Fix the Sync Error
If the credit does not exist in QBO
- Change the vendor credit reference number in Bill.com to a unique number
- Sync again
If the credit already exists in QBO or if no duplicate number is found in QBO
- Contact Customer Support for assistance