3825155 - List Import Error: "An unhandled exception occurred while processing the file:The maximum system-generated unique value for a duplicate group was exceeded for index with partition ID 72057595288944640. Dropping and re-creating the index may resolve this"

I have a daily feed running within concur to update our lists and off late, we noticed that our list files were failing due to an un-handled exception. How do I resolve this? What is wrong with the file that I’m sending to concur?

Error Message: 

List Import Error: "An unhandled exception occurred while processing the file:The maximum system-generated unique value for a duplicate group was exceeded for index with partition ID 72057595288944640. Dropping and re-creating the index may resolve this"

I encountered an error during our list import and the import returned a failure status. The error talks about dropping & re-creating the index table , KBA , CON-CA-TLS-IEM-JOB , Scheduled Jobs , Problem