Updated disk-encryption-key-vault.md

Updated warning message to create a key vault is the same region and subscription as that of VM.

Author: maamleka

includes/disk-encryption-key-vault.md

@@ -34,7 +34,7 @@ New-AzResourceGroup -Name "myResourceGroup" -Location "EastUS"
 Create a key vault using the [az keyvault create](/cli/azure/keyvault?view=azure-cli-latest#az-keyvault-create) Azure CLI command, the [New-AzKeyvault](/powershell/module/az.keyvault/new-azkeyvault) Azure Powershell command, the [Azure portal](https://portal.azure.com), or a [Resource Manager template](https://github.com/Azure/azure-quickstart-templates/tree/master/101-key-vault-create).
 
 >[!WARNING]
-> To ensure that encryption secrets don't cross regional boundaries, Azure Disk Encryption requires the Key Vault and the VMs to be co-located in the same region. Create and use a Key Vault that is in the same region as the VMs to be encrypted. 
+> To ensure that encryption secrets don't cross regional boundaries, Azure Disk Encryption requires the Key Vault and the VMs to be co-located in the same region and same subscription. Create and use a Key Vault that is in the same region as the VMs to be encrypted. 
 
 Each Key Vault must have a unique name. Replace <your-unique-keyvault-name> with the name of your key vault in the following examples.