Two Way Sync between Salesforce and Xero. Create Invoices in Salesforce and sync them to Xero automatically. Historical Sync from Xero. Have data in Xero you want to bring across to Salesforce? With our historic sync capabilities, we can bring in all of your historic data from Xero and sync it to the right accounts. Create Invoices directly from Salesforce Classic, Lightning or your Mobile device TwoCanConnect for Xero allows you to connect your Salesforce instance with your Xero accounting application.