This error occurs during a Unify Enterprise Database upgrade. The database upgrade process begins a 'Service_Broker' process on the SQL Server.  If such a process is already running, the upgrade fails with the above error.  

This solution involves using advanced SQL Query as well as the use of a Third Party software. Do this at your own risk or call Webgility support on 877.753.5373 for technical help.

Here is how to fix this error: 

Step 1: Download the Query express Software from albahari.com. Note : All credits and responsibilities of the software rest with the software maker.

Step 2: Connect the database of the Unify Enterprise with SQl authentication.  

• Username "sa" 
• Password: Webgility2011

Step 3: Use UnifyDB in the sql window

Step 4: Then run the following script

1. Alter database UnifyDB SET NEW_BROKER
2. Alter database UnifyDB SET ENABLE_BROKER