UMI: V-275-548
Event ID: 58053
Source:Backup Exec
Type:Error
Description: Backup Exec Alert: Device Error
(Server: "%server%") (Job: "Weekly Tape Backup - (Full)" Robotic library transport element full error.
The robotic library has reported a destination element full error condition. This is typically caused by trying to mount media into a drive that already contains media.
The drive state has been set to offline. Please attend to this condition.
Error in BE :
V-275-548 - Robotic library destination element full error.
The robotic library has reported a destination element full error condition. This is typically caused by trying to mount media into a drive that already contains media. The drive state has been set to offline. Please attend to this condition.
The alert is reported when the robotic library tries to move media from a robotic library drive to a slot and the slot already contains media. The robotic library state has been set offline.

How to troubleshoot issues with a Robotic Library (autoloader/changer) and/or Tape Drive(s).