In Skyhigh Security Cloud, you can choose to use the Trellix DLP on-premise classifications, because the content rules for your Cloud DLP policies. With this option, you do not have to recreate the content rules in the Skyhigh Security Cloud tenant, but rather simply synchronize the classifications already created in ePO - On-prem.
Select Policy → Policy Settings.
Click On Premise DLP and then click Trellix DLP.
Click On under Use Policies defined in On Premise Trellix DLP.
Click Select Services and then choose the cloud services for which you'd like to use Trellix classifications as the content rules. This gives you the ability to use Trellix classification rules for some services, and Skyhigh Security Cloud rules for other services.
For example, you might want to use Trellix classifications for O365 services like SharePoint and OneDrive, but use native Skyhigh Security Cloud rules for Slack.
Important
Do not select Exchange Online as one of the services to use on-premise Trellix DLP classifications.
Click Save.