diff --git a/xos/tosca/custom_types/xos.m4 b/xos/tosca/custom_types/xos.m4
index 5b2a5ab..783f0d4 100644
--- a/xos/tosca/custom_types/xos.m4
+++ b/xos/tosca/custom_types/xos.m4
@@ -453,11 +453,11 @@
             xos_base_props
             visibility:
                 type: string
-                default: private
+                required: false
                 description: Indicates whether network is publicly routable.
             translation:
                 type: string
-                default: none
+                required: false
                 description: Indicates whether network uses address translation.
             shared_network_name:
                 type: string
@@ -469,7 +469,7 @@
                 description: Attaches this template to a specific OpenStack network.
             topology_kind:
                 type: string
-                default: BigSwitch
+                required: false
                 description: Describes the topology of the network.
             controller_kind:
                 type: string
diff --git a/xos/tosca/custom_types/xos.yaml b/xos/tosca/custom_types/xos.yaml
index 6b76fae..1450a5e 100644
--- a/xos/tosca/custom_types/xos.yaml
+++ b/xos/tosca/custom_types/xos.yaml
@@ -831,11 +831,11 @@
                 description: Do not allow Tosca to update this object
             visibility:
                 type: string
-                default: private
+                required: false
                 description: Indicates whether network is publicly routable.
             translation:
                 type: string
-                default: none
+                required: false
                 description: Indicates whether network uses address translation.
             shared_network_name:
                 type: string
@@ -847,7 +847,7 @@
                 description: Attaches this template to a specific OpenStack network.
             topology_kind:
                 type: string
-                default: BigSwitch
+                required: false
                 description: Describes the topology of the network.
             controller_kind:
                 type: string