Xero Sync Error - How to Fix

Class Manager displays the exact error message returned by Xero. If you see an error indicating that invoices cannot be synced, this usually means those invoices already exist in Xero and can’t be sent again.

How to resolve this

1. Check the error message shown -it will reference the last invoice number on the error list (for example, Invoice 70).

2. Go to your invoice list and open that invoice. 

   • Go to Billing > Invoices
   • Enter the invoice number on the search field to find it quickly
3. Look at the invoice ID number in the browser URL
   • For example:
      https://app.classmanager.com/<company-name>/invoices/100
     Invoice ID number is 100
4. Go back to Settings > Integrations > Xero
5. Enter the number from the URL (e.g. 100) into the Skip invoices with IDs field.
6. Click Save, then try syncing again

This tells Class Manager to skip invoices that already exist in Xero and continue syncing any remaining invoices successfully.