Backup exec job successful but cannot see in backup sets or run restore job

Hello,

I wanted to restore the mail item this this when I’ve noticed that the backup set was unavailable from backup sets. I have checked the backup log for that day and job was completed successfully. I proceeded on checking other 3 jobs that that I have set up running daily and it seems that the only restore that is available is for the server that Backup Exec is installed on. Other two jobs were also successful but not available for restore. Any ideas what could cause this?

Many thanks