diff --git a/src/terraform-provider-ncloud/resource_instance.go b/src/terraform-provider-ncloud/resource_instance.go
index cd02ef0..1d2a173 100644
--- a/src/terraform-provider-ncloud/resource_instance.go
+++ b/src/terraform-provider-ncloud/resource_instance.go
@@ -18,26 +18,31 @@ func resourceInstance() *schema.Resource {
 			"zone_number": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 				Description: "Zone number (see https://github.com/Wizcorp/terraform-provider-ncloud/blob/master/Services.md#zones)",
 			},
 			"server_product_code": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 				Description: "Product code (see https://github.com/Wizcorp/terraform-provider-ncloud/blob/master/Services.md#servers-server_product_code)",
 			},
 			"server_image_product_code": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 				Description: "Server image code (see https://github.com/Wizcorp/terraform-provider-ncloud/blob/master/Services.md#images-server_image_product_code)",
 			},
 			"login_keyname": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 				Description: "login keyname",
 			},
 			"termination_protection": &schema.Schema{
 				Type:        schema.TypeBool,
 				Required:    false,
+				ForceNew:    true,
 				Description: "login keyname",
 				Default:     false,
 			},
diff --git a/src/terraform-provider-ncloud/resource_login_key.go b/src/terraform-provider-ncloud/resource_login_key.go
index 0faa37c..e342c20 100644
--- a/src/terraform-provider-ncloud/resource_login_key.go
+++ b/src/terraform-provider-ncloud/resource_login_key.go
@@ -18,6 +18,7 @@ func resourceLoginKey() *schema.Resource {
 			"name": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 				Description: "Key name",
 			},
 			"private_key": &schema.Schema{
diff --git a/src/terraform-provider-ncloud/resource_public_ip.go b/src/terraform-provider-ncloud/resource_public_ip.go
index 4e92ae8..a0563a6 100644
--- a/src/terraform-provider-ncloud/resource_public_ip.go
+++ b/src/terraform-provider-ncloud/resource_public_ip.go
@@ -17,6 +17,7 @@ func resourcePublicIP() *schema.Resource {
 		Schema: map[string]*schema.Schema{
 			"server_id": &schema.Schema{
 				Type:        schema.TypeString,
+				ForceNew:    true,
 				Required:    true,
 				Description: "Product code (see https://github.com/Wizcorp/terraform-provider-ncloud/blob/master/Services.md#servers-server_product_code)",
 			},