Every finance leader running more than one Xero organisation knows the moment it happens. The business opens a second entity, a new subsidiary, a new region, an acquisition and almost overnight, the accounts payable workload doesn't just grow, it multiplies. Invoices now arrive in two formats, two inboxes, and sometimes two currencies. Approval chains have to be duplicated across entities. And the instinctive response from most finance teams is the same: hire another bookkeeper.