NetBackup Hyper-V 2012 Backup moving Virtual Machine to Save State

Hi Techs,

We are facing issue while a Hyper V Backup.

When I start a backup of the HyperV of 2012 Server. Virtual Machine is moving to Saved State and backup will start.

During the backup. We are unable to access the Virtual Machine and Application.

Once backup Completes it will comes to normal State and even during the backup no vss shadows are creating.

Any inputs.

Rgds, punbs