CmdID

CmdID / PowerShell / Cmdlets / Deny

Deny-WsusUpdate

Declines the update for deployment. Windows Server PowerShell reference

From the Windows Server PowerShell reference 3 parameters Its page in the reference

Opens CmdID with your command, read as PowerShell. It is read in your browser and sent nowhere.

Parameters

3 in the Windows Server PowerShell reference
-Confirm, -cfPrompts you for confirmation before running the cmdlet.
-UpdateSpecifies the object that contains the server of the update to be approved or denied as well as the update to be approved or denied.
-WhatIf, -wiShows what would happen if the cmdlet runs.