There are mentioned "Soft Limits" in Xero. These are around recommended transaction or reporting category limits. These are written in various Xero articles you can browse online. Typically we will not encourage clients to use Xero if they have over 1,000 transactions of one transaction type or over 100 items within a tracking category. There are Integrated apps you can use to alleviate these issues but you will still be reliant on the core functionality of Xero in some places.