backupTaskSession null list return

[SmithJohn]

May I know how long would the backupTaskSession data be kept?
As my programmer found that http://<veeambackupserver IP> /api/query?type=BackupTaskSession&format=Entities&sortDesc=endTime&pageSize=15&page=1&filter=VmDisplayName==windows returns an empty list.

[hatari]

Are you sure, that filter VmDisplayName==windows is correct?
Also, are you sure, that this Vm was backuped?
Do you have a Vm with name "windows" exactly? If you want all Vms started from "windows", you should use search this way VmDisplayName==windows*

[SmithJohn]

I understand what you mean. "window" just is an example
Actually, I had login to the backupTaskSession through api. I found that there are no this session for a specific VM. but I can found this restore point in the restorePoints part for this VM.

I wonder the sessions would be deleted after a period of time or by some other event.

[SmithJohn]

I use this to check . <Link Rel="Down" Type="BackupTaskSessionReferenceList"

I found that not all backup task session had been shown.

[hatari]

Could you, please, check any distinctive feature of backup task session, which doesn't exist?