Why the sync error occurs
This error occurs when an invoice can't sync to Xero because the invoice number already exists in Xero.
How to fix the sync error
- If this is a new invoice, edit the invoice number to one that doesn't already exist in Xero and sync again
- If the invoice was also manually created in Xero, contact Customer Support to link the invoices
- In order for the sync to work properly, bills should be created in either Xero or Bill.com and synced to the other system