3823321 - How do I find an unassigned card in a particular job run?

I have received this email notification: 

The following import contained one or more new card accounts that were not automatically assigned to an employee. Please use the Manage Accounts page to assign the card accounts to the appropriate employees.

Import Name: 
Run Number :
Run date: 

We are unable to find the card that needs to be assigned.

Client received an email notification from a job run about unassigned cards and would like more information on how to find those cards , KBA , CON-CA-ADM , Administration , Problem