To manage the orders,

1. Go to the Magento Admin Panel.
2. On the left navigation bar, click on Zalando Retail Integration.
   The menu appears as shown below:
   
3. Click on Manage Orders.
   The Manage Orders page appears as shown below:
   
4. The orders along with their details are mentioned in the order grid.
5. To delete orders in bulk, click on the Actions list.
   
6. Click on Delete Order(s) under the Actions list.
   The selected orders will be deleted.