What is a feature of tracked inventory in Xero?

Tracked inventory in Xero offers the feature of automatic updates on quantity available. This means that whenever a sale is made or inventory is received, Xero automatically adjusts the inventory levels in real-time. This ensures that businesses always have an accurate account of their available stock, which is crucial for inventory management and decision-making.

The ability to automatically track inventory quantities helps reduce manual errors and the administrative burden of keeping detailed records. Businesses can avoid situations like overselling, which can occur if inventory levels are not updated promptly, and can improve their overall efficiency by relying on the software to handle these updates.

Other features mentioned do not pertain to tracked inventory. Manual entry of all sales suggests a lack of automation that Xero aims to provide with its inventory tracking capabilities. The automatic calculation of sales tax, while useful, is not a unique feature of tracked inventory but rather a general functionality across Xero’s invoicing and sales processes. "None of the above" also does not apply, as tracked inventory indeed has defined features, particularly the automatic updates on quantity available.