diff --git a/schemas/base.yml b/schemas/base.yml
index cf6bd83..0c220c0 100644
--- a/schemas/base.yml
+++ b/schemas/base.yml
@@ -30,6 +30,7 @@ generics:
         peer: InfraDevice
         cardinality: one
         kind: Parent
+        optional: false
       - name: ip_addresses
         peer: InfraIPAddress
         cardinality: many