Update Set-IRMConfiguration.md

Issue #11057

Author: chrisda

exchange/exchange-ps/exchange/Set-IRMConfiguration.md

@@ -266,6 +266,8 @@ Accept wildcard characters: False
 ### -EnablePortalTrackingLogs
 This parameter is available only in the cloud-based service.
 
+**Note**: This parameter is available only in organizations with Microsoft Purview Advanced Message Encryption. For more information, see [Advanced Message Encryption](https://learn.microsoft.com/microsoft-365/compliance/ome-advanced-message-encryption).
+
 The EnablePortalTrackingLogs parameter specifies whether to turn on auditing for the Office 365 Message Encryption (OME) portal. Valid values are:
 
 - $true: Turn on auditing for activities in the OME portal. Activities are visible in the audit logs.