Hello,
In the License Usage table, each row represents the license usage of Virtual Data Port(VDP), Scheduler or Data Catalog server. A new row is added each time one of these servers starts. When you stop any of these servers, they notify the license manager via HTTP request and get free from the license usage. You can manually free the server from license usage to remove VDP server from the license usage screen. To do so I would send the HTTP request from the command line.
For example, to free the license associated with the VDP server that runs on a host with IP “127.0.0.1”. I will run the command -
`curl --user "jsmith" "https://solution-manager.acme.com:10091/externalShutdown?nodeIp=127.0.0.1&port=9999&product=VDP`
You can refer to the document [Free License Usage](https://community.denodo.com/docs/html/browse/latest/en/solution_manager/administration/appendix/rest_api/rest_api#sm-api-free-license-usage), to understand how to get the required information to run the CURL command and free the denodo server from the license usage.
Hope this helps!