CmdID

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Remove-DlpEdmSchema

Use the Remove-DlpEdmSchema cmdlet to remove exact data match (EDM) data loss prevention (DLP) schemas from the Microsoft Purview compliance portal. Exchange PowerShell reference

From the Exchange PowerShell reference 3 parameters Its page in the reference

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Parameters

3 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the DLP EDM schema that you want to remove.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-WhatIf, -wiThe WhatIf switch doesn't work in Security & Compliance PowerShell.