Backup Exec 34113

I have Backup Exec 2014 under Microsoft Windows Server 2012.

I have a backup task for email databases Exchnage. After the completion of the task automatically starts the task of cataloging, which ends with an error 0xe00003bd:

V-79-57344-957 - Missing one or more messages from the failure of transfer of messages in the file EDB. For more information, check the job log.

 

In Event Log I see error:

Source: Backup Exec

ID: 34113

Warning Backup Exec: Target
(Server: "server") (Job: "The catalog of 00,333 mail-mbx.contoso.com JOBNAME") catalog of 00,333 mail-mbx.contoso.com JOBNAME - Error while performing the task: Unable to retrieve messages from the mailbox backup Exchange. For more information, see the job log.

What is the problem?