diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 39acdcfdf1..7a9721b4e7 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -1941,8 +1941,8 @@ class HostSerializer(BaseSerializerWithVariables):
         return value
 
     def validate_inventory(self, value):
-        if value.kind == 'smart':
-            raise serializers.ValidationError({"detail": _("Cannot create Host for Smart Inventory")})
+        if value.kind in ('constructed', 'smart'):
+            raise serializers.ValidationError({"detail": _("Cannot create Host for Smart or Constructed Inventories")})
         return value
 
     def validate_variables(self, value):
@@ -2040,8 +2040,8 @@ class GroupSerializer(BaseSerializerWithVariables):
         return value
 
     def validate_inventory(self, value):
-        if value.kind == 'smart':
-            raise serializers.ValidationError({"detail": _("Cannot create Group for Smart Inventory")})
+        if value.kind in ('constructed', 'smart'):
+            raise serializers.ValidationError({"detail": _("Cannot create Group for Smart or Constructed Inventories")})
         return value
 
     def to_representation(self, obj):
@@ -2222,8 +2222,8 @@ class InventorySourceSerializer(UnifiedJobTemplateSerializer, InventorySourceOpt
         return value
 
     def validate_inventory(self, value):
-        if value and value.kind == 'smart':
-            raise serializers.ValidationError({"detail": _("Cannot create Inventory Source for Smart Inventory")})
+        if value and value.kind in ('constructed', 'smart'):
+            raise serializers.ValidationError({"detail": _("Cannot create Inventory Source for Smart or Constructed Inventories")})
         return value
 
     # TODO: remove when old 'credential' fields are removed
diff --git a/awx/api/views/__init__.py b/awx/api/views/__init__.py
index e81a6ebbde..c5d36e114c 100644
--- a/awx/api/views/__init__.py
+++ b/awx/api/views/__init__.py
@@ -1559,6 +1559,8 @@ class HostDetail(RelatedJobsPreventDeleteMixin, RetrieveUpdateDestroyAPIView):
     def delete(self, request, *args, **kwargs):
         if self.get_object().inventory.pending_deletion:
             return Response({"error": _("The inventory for this host is already being deleted.")}, status=status.HTTP_400_BAD_REQUEST)
+        if self.get_object().inventory.kind == 'constructed':
+            return Response({"error": _("Delete constructed inventory hosts from input inventory.")}, status=status.HTTP_400_BAD_REQUEST)
         return super(HostDetail, self).delete(request, *args, **kwargs)