This page displays the inventory based on the SKU of eBay products variation. Here the associated Shopify variants are shown with the specific SKU. The logo describes the source of the product variation. And the status shows if the inventory has been synced or not.
If you have not enabled your inventory setting then this page will be shown. Click on "Enable in Setting" to enable inventory sync based on SKU which will redirect you to setting page.
Based on your preferences select your sync setting and click "Update Settings".