diff --git a/feathr_project/feathr/registry/_feature_registry_purview.py b/feathr_project/feathr/registry/_feature_registry_purview.py
index 4ef05a690..c564e8796 100644
--- a/feathr_project/feathr/registry/_feature_registry_purview.py
+++ b/feathr_project/feathr/registry/_feature_registry_purview.py
@@ -1368,11 +1368,11 @@ def _get_transformation_from_dict(self, input: Dict) -> FeatureType:
         if 'transformExpr' in input:
             # it's ExpressionTransformation
             return ExpressionTransformation(input['transformExpr'])
-        elif 'def_expr' in input:
-            agg_expr=input['def_expr'] if 'def_expr' in input else None
-            agg_func=input['agg_func']if 'agg_func' in input else None
+        elif 'def_expr' in input or 'defExpr' in input: 
+            agg_expr=input['def_expr'] if 'def_expr' in input else (input['defExpr'] if 'defExpr' in input else None)
+            agg_func=input['agg_func']if 'agg_func' in input else (input['aggFunc'] if 'aggFunc' in input else None)
             window=input['window']if 'window' in input else None
-            group_by=input['group_by']if 'group_by' in input else None
+            group_by=input['group_by']if 'group_by' in input else (input['groupBy'] if 'groupBy' in input else None)
             filter=input['filter']if 'filter' in input else None
             limit=input['limit']if 'limit' in input else None
             return WindowAggTransformation(agg_expr, agg_func, window, group_by, filter, limit)