To revise items,

1. Go to your Magento 2 admin panel.
2. Click on eBay present on the left navigation bar.
   
3. Click on Product Manager.
   The eBay Product Listing page appears as shown in the following figure:
   
4. Select the products that you want to revise/update by checking the corresponding boxes.
5. Click the Arrow button next to the Actions list, and then click Revise Item(s).
   
   
6. A Confirmation dialog box appears as shown in the following figure. Click OK. 
   The page appears as shown in the following figure with the status:
   

The selected products get revised on eBay.