Activity 'Registering Backup and Applying Retention' failed with error: Retention : Error: Remove Snapshot snapshot_name failed on volume volume_name. Use the "snapshot show -fields owners, expiry-tim...Activity 'Registering Backup and Applying Retention' failed with error: Retention : Error: Remove Snapshot snapshot_name failed on volume volume_name. Use the "snapshot show -fields owners, expiry-time" command to view the expiry and lock status of the Snapshot copy.. Error: Remove Snapshot snapshot_name failed on volume volume_name. Activity 'Starting Exchange Backup' failed with error: The following activities failed: Registering Backup and Applying Retention, Grouping Resources.