Matching your listings in OneCart tells the system which SKU is mapped to which listing on your e-commerce platforms. Once everything is matched, that means that all your active e-commerce listings on your different platforms are linked back to a SKU being managed in OneCart.

You can now manage stock levels, prices, and view reports accurately. 

If you'd like inventory to be synced automatically, read this: https://help.getonecart.com/help/toggling-on-inventory-sync

Learn about how to manage prices here: https://help.getonecart.com/help/price-updates

Happy Selling!