@GVS Thank you for your post!
As per error message it looks like the disk was part of a VM configured with Azure backup.
To move virtual machines configured with Azure Backup, use the following workaround:
· Find the location of your Virtual Machine.
· Find a resource group with the following naming pattern: AzureBackupRG_<location of your VM>_1 for example, AzureBackupRG_westus2_1
· If in Azure portal, then check "Show hidden types"
· If in PowerShell, use the Get-AzResource -ResourceGroupName AzureBackupRG_<location of your VM>_1 cmdlet
· If in CLI, use the az resource list -g AzureBackupRG_<location of your VM>_1
· Find the resource with type Microsoft.Compute/restorePointCollections that has the naming pattern AzureBackup_<name of your VM that you're trying to move>_###########
· Delete this resource. This operation deletes only the instant recovery points, not the backed-up data in the vault.
· After delete is complete, you can move the vault and virtual machine to the target subscription. After the move, you can continue backups with no loss in data.
· For information about moving Recovery Service vaults for backup, see Recovery Services limitations.
Please feel free to ping with questions if required further assistance in this matter!
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