diff --git a/builtin/providers/azurerm/resource_arm_virtual_machine.go b/builtin/providers/azurerm/resource_arm_virtual_machine.go
index b813f827c..456d9bff6 100644
--- a/builtin/providers/azurerm/resource_arm_virtual_machine.go
+++ b/builtin/providers/azurerm/resource_arm_virtual_machine.go
@@ -43,6 +43,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 				Type:     schema.TypeSet,
 				Optional: true,
 				Computed: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"name": {
@@ -88,6 +89,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 				Type:     schema.TypeSet,
 				Optional: true,
 				Computed: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"publisher": {
@@ -118,6 +120,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 			"storage_os_disk": {
 				Type:     schema.TypeSet,
 				Required: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"os_type": {
@@ -199,6 +202,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 			"os_profile": {
 				Type:     schema.TypeSet,
 				Required: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"computer_name": {
@@ -230,6 +234,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 			"os_profile_windows_config": {
 				Type:     schema.TypeSet,
 				Optional: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"provision_vm_agent": {
@@ -288,6 +293,7 @@ func resourceArmVirtualMachine() *schema.Resource {
 			"os_profile_linux_config": {
 				Type:     schema.TypeSet,
 				Optional: true,
+				MaxItems: 1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"disable_password_authentication": {
@@ -772,10 +778,6 @@ func flattenAzureRmVirtualMachineOsDisk(disk *compute.OSDisk) []interface{} {
 func expandAzureRmVirtualMachinePlan(d *schema.ResourceData) (*compute.Plan, error) {
 	planConfigs := d.Get("plan").(*schema.Set).List()
 
-	if len(planConfigs) != 1 {
-		return nil, fmt.Errorf("Cannot specify more than one plan.")
-	}
-
 	planConfig := planConfigs[0].(map[string]interface{})
 
 	publisher := planConfig["publisher"].(string)
@@ -792,10 +794,6 @@ func expandAzureRmVirtualMachinePlan(d *schema.ResourceData) (*compute.Plan, err
 func expandAzureRmVirtualMachineOsProfile(d *schema.ResourceData) (*compute.OSProfile, error) {
 	osProfiles := d.Get("os_profile").(*schema.Set).List()
 
-	if len(osProfiles) != 1 {
-		return nil, fmt.Errorf("[ERROR] Only 1 OS Profile Can be specified for an Azure RM Virtual Machine")
-	}
-
 	osProfile := osProfiles[0].(map[string]interface{})
 
 	adminUsername := osProfile["admin_username"].(string)
@@ -888,10 +886,6 @@ func expandAzureRmVirtualMachineOsProfileSecrets(d *schema.ResourceData) *[]comp
 func expandAzureRmVirtualMachineOsProfileLinuxConfig(d *schema.ResourceData) (*compute.LinuxConfiguration, error) {
 	osProfilesLinuxConfig := d.Get("os_profile_linux_config").(*schema.Set).List()
 
-	if len(osProfilesLinuxConfig) != 1 {
-		return nil, fmt.Errorf("[ERROR] Only 1 OS Profile Linux Config Can be specified for an Azure RM Virtual Machine")
-	}
-
 	linuxConfig := osProfilesLinuxConfig[0].(map[string]interface{})
 	disablePasswordAuth := linuxConfig["disable_password_authentication"].(bool)
 
@@ -928,10 +922,6 @@ func expandAzureRmVirtualMachineOsProfileLinuxConfig(d *schema.ResourceData) (*c
 func expandAzureRmVirtualMachineOsProfileWindowsConfig(d *schema.ResourceData) (*compute.WindowsConfiguration, error) {
 	osProfilesWindowsConfig := d.Get("os_profile_windows_config").(*schema.Set).List()
 
-	if len(osProfilesWindowsConfig) != 1 {
-		return nil, fmt.Errorf("[ERROR] Only 1 OS Profile Windows Config Can be specified for an Azure RM Virtual Machine")
-	}
-
 	osProfileConfig := osProfilesWindowsConfig[0].(map[string]interface{})
 	config := &compute.WindowsConfiguration{}
 
@@ -1024,10 +1014,6 @@ func expandAzureRmVirtualMachineDataDisk(d *schema.ResourceData) ([]compute.Data
 func expandAzureRmVirtualMachineImageReference(d *schema.ResourceData) (*compute.ImageReference, error) {
 	storageImageRefs := d.Get("storage_image_reference").(*schema.Set).List()
 
-	if len(storageImageRefs) != 1 {
-		return nil, fmt.Errorf("Cannot specify more than one storage_image_reference.")
-	}
-
 	storageImageRef := storageImageRefs[0].(map[string]interface{})
 
 	publisher := storageImageRef["publisher"].(string)
@@ -1065,10 +1051,6 @@ func expandAzureRmVirtualMachineNetworkProfile(d *schema.ResourceData) compute.N
 func expandAzureRmVirtualMachineOsDisk(d *schema.ResourceData) (*compute.OSDisk, error) {
 	disks := d.Get("storage_os_disk").(*schema.Set).List()
 
-	if len(disks) != 1 {
-		return nil, fmt.Errorf("[ERROR] Only 1 OS Disk Can be specified for an Azure RM Virtual Machine")
-	}
-
 	disk := disks[0].(map[string]interface{})
 
 	name := disk["name"].(string)