diff --git a/python/samba/netcmd/domain/models/site.py b/python/samba/netcmd/domain/models/site.py
index 53db6e2c3b1..134a2cd5c1d 100644
--- a/python/samba/netcmd/domain/models/site.py
+++ b/python/samba/netcmd/domain/models/site.py
@@ -26,9 +26,11 @@ from .model import Model
 
 class Site(Model):
     show_in_advanced_view_only = BooleanField("showInAdvancedViewOnly")
-    site_object_bl = DnField("siteObjectBL")
     system_flags = IntegerField("systemFlags")
 
+    # Backlinks
+    site_object_bl = DnField("siteObjectBL", readonly=True)
+
     @staticmethod
     def get_base_dn(ldb):
         """Return the base DN for the Site model.
diff --git a/python/samba/netcmd/domain/models/value_type.py b/python/samba/netcmd/domain/models/value_type.py
index c03b394b19a..00a4e072427 100644
--- a/python/samba/netcmd/domain/models/value_type.py
+++ b/python/samba/netcmd/domain/models/value_type.py
@@ -44,9 +44,12 @@ class ValueType(Model):
         "msDS-ClaimIsValueSpaceRestricted")
     claim_value_type = IntegerField("msDS-ClaimValueType")
     is_possible_values_present = BooleanField("msDS-IsPossibleValuesPresent")
-    value_type_reference_bl = DnField("msDS-ValueTypeReferenceBL")
     show_in_advanced_view_only = BooleanField("showInAdvancedViewOnly")
 
+    # Backlinks
+    value_type_reference_bl = DnField(
+        "msDS-ValueTypeReferenceBL", readonly=True)
+
     @staticmethod
     def get_base_dn(ldb):
         """Return the base DN for the ValueType model.