lib/membership/member.ex

@@ -1300,12 +1300,15 @@ defmodule Mv.Membership.Member do
     end
   end
 
-  # Extracts custom field values from existing member data (update scenario)
+  # Extracts custom field values from existing member data (update scenario).
+  # Actor must come from context; no system-actor fallback (per guidelines).
+  # When no actor is present we skip the load and return empty map.
   defp extract_existing_values(member_data, changeset) do
-    actor =
-      Map.get(changeset.context, :actor) ||
-        Mv.Helpers.SystemActor.get_system_actor()
+    case Map.get(changeset.context, :actor) do
+      nil ->
+        %{}
 
+      actor ->
         opts = Helpers.ash_actor_opts(actor)
 
         case Ash.load(member_data, :custom_field_values, opts) do
@@ -1316,6 +1319,7 @@ defmodule Mv.Membership.Member do
             %{}
         end
     end
+  end
 
   # Extracts value from a CustomFieldValue struct
   defp extract_value_from_cfv(cfv, acc) do