If a DLP policy is exported individually from one ePO and imported to another ePO, the Unknown Error Occurred error is displayed. When an individual XML file is exported, it does not export all rules and classifications and so causes errors.

For example: Consider "mcafee_policy_example" as the DLP policy, ePO_1 and ePO_2 as the two ePolicy Orchestrators. The Unknown Error Occurred error is displayed when you:

• Export the mcafee_policy_example individually in the Policy Catalog menu from ePO_1.
• Import the mcafee_policy_example in the Policy Catalog menu on ePO_2.
• Open the mcafee_policy_example from the Policy Catalog of ePO_2.