With the DLP Cloud Service installed the existing "Enforce ID" is a key identifier or "UUID", which is unique to every Enforce instance. The current method of preserving a backup of Enforce data (the Reinstallation Resources utility) does not collect this piece of information.
DLP Cloud Services with on-premises Enforce Server
You need to retain this information in the event of a Disaster Recovery scenario, as per the details given at this Help Center topic:
Configure the Symantec Data Loss Prevention Cloud Service for Disaster Recovery (broadcom.com)
The Enforce ID is displayed when viewing the Enforce Server, by clicking on it in the System > Servers and Detectors view.
You can also confirm the Enforce ID (the "UUID") directly from the Database, by running the following query (as the "protect" user):
SELECT * FROM ENFORCEINSTANCE;
Output for above example:
ENFORCEUUID
------------------------------------
B8C8DDBB-4C37-9BA6-9BA6-B8C8DDBBD3A
Preserve a copy of this ID in the event of a system recovery.
If Enforce was reinstalled after a disaster or hard failure (or as a backup server following instructions for backup and recovery), the resultant Enforce ID may be different than the backup ID.
Confirm it via the methods given in the Resolution steps in this article.
If you need to replace the new Enforce ID with the original one (saved as prior backup), use the following method:
Connect to the database via SQLPlus, as the "protect" user.
Run the following command:
UPDATE ENFORCEINSTANCE e set ENFORCEUUID = REPLACE(e.ENFORCEUUID, '<current UUID>','<original UUID>');
Requery to confirm the UUID has been set:
SELECT * FROM ENFORCEINSTANCE;
If it matches, run the below command to set the change:
commit;
The COMMIT statement is vital. Even if the new UUID shows up in the SQL query, it won't persist without committing the change.
Afterward, restart all Symantec DLP services.
Creating the Enforce Reinstallation Resources file (broadcom.com)
The utility includes the collection of the enforce_keystore.jks from the original Enforce Server. That keystore contains the Cloud Certificate for your enrolled Cloud Detectors.
About High Availability and Disaster Recovery for Symantec Data Loss Prevention (broadcom.com)
Cloud Architectural Considerations (broadcom.com)
Backing Up and Recovering on Windows (broadcom.com)
Backing up and recovering on Linux (broadcom.com)