Product Stock Secondary UOM QTY in Odoo helps users manage and track product quantities in a secondary unit of measure along with the main unit. This feature is useful for businesses that sell or store products in different units like pieces, boxes, kilograms, or meters. It allows users to view stock levels, update quantities, and manage inventory more accurately. The system automatically converts quantities between primary and secondary units, reducing manual work and calculation errors. This improves stock control, simplifies inventory management, and helps businesses handle purchasing, sales, and warehouse operations more efficiently.