Error code "6001 - UDS storage recoverable error" after a test move of the Enforce server to another data center

Products

• Data Loss Prevention

Issue/Introduction

Scenario: 
Tested moving the Enforce server to a new data center.
The database was copied to the new data center.
The Enforce Sever was built in the new data center using the enforceReinstallationResource file.
The Detection Servers connected to the new Enforce Server without issue.
The agents were communicating.
The new Enforce in the new datacenter was then taken off-line.
The Detection Servers were reconnected to the old Enforce Server.
The Endpoint Detection Servers then threw the following error:

Code 6001 UDS storage recoverable error

And the agents were no longer connecting.

Environment

DLP 16.1

Cause

This was caused by the key rotation.
The UDS stores the state on the Detection Server.
The keys rotated and the system used the new key to encrypt the agent state information.
So when they moved back to the original data center, the keys did not match and the agents did not connect.

Resolution

Delete all the files in the following HEARTBEAT directory and restart the services on the Detection Servers.

ProgramData\Symantec\DataLossPrevention\DetectionServer\Account-storage\EnforceSlot-uuid\HEARTBEAT