QBO connected users have the ability to add a Keeper report to flag for class inconsistencies. Not sure why this wouldn't be something that we'd have available for Xero since Xero uses tracking categories in the same way that QBO uses classes. Being able to see inconsistencies in the chosen tracking category for a vendor or expense is super important and right now is not easy to accomplish within Keeper. We either have to make custom reports and hope everything gets caught or go line by line vendor by vendor in the P&L to see if things match up.