Why the sync error occurs
This error occurs when a credit and/or payment is trying to sync to Xero, but a payment or credit is already applied to the bill in Xero.
How to fix the sync error
- In Xero, verify that nothing has been applied to the bill
- If a payment or credit has been applied, unapply it in Xero
- Sync again
If the error persists or if you don't need the payment to sync, please contact Customer Support.