CmdID

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New-ComplianceRetentionEventType

Use the New-ComplianceRetentionEventType cmdlet to create retention event types in the Microsoft Purview compliance portal. Exchange PowerShell reference

From the Exchange PowerShell reference 4 parameters Its page in the reference

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Parameters

4 in the Exchange PowerShell reference
-NameThe Name parameter specifies the unique name of the retention event type.
-CommentThe Comment parameter specifies an optional comment.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-WhatIf, -wiThe WhatIf switch doesn't work in Security & Compliance PowerShell.