Hard Delete Records in Privacy Center
You can now hard delete records when running a retention or RTBF policy. When you enable the Hard Delete option, the record isn’t placed in the recycle bin, which requires a wait period of 15 days before deleting or manually emptying the recycle bin.
Where: This change applies to Lightning Experience in Enterprise, Performance, Unlimited, and Developer editions.
How: Both the policy administrator and the user connected to Privacy Center must have the Bulk API Hard Delete permission enabled for their profile. In the policy editor, choose the object to delete. Under Action On Data in Org, turn on Hard Delete.