Xero only allows item name to be 50 characters long. In Cliniko, products and billable items can have much longer names. If a product or billable item had a name longer than 50 characters, it would prevent the invoice from syncing to Xero.
This issue has now been fixed! Product and billable items with long names are now truncated to 50 characters when synced to Xero.
Happy syncing! :)