diff --git a/client/ayon_core/pipeline/create/structures.py b/client/ayon_core/pipeline/create/structures.py
index bcc9a87c49..ba4a373597 100644
--- a/client/ayon_core/pipeline/create/structures.py
+++ b/client/ayon_core/pipeline/create/structures.py
@@ -132,6 +132,10 @@ def __getitem__(self, key):
     def __contains__(self, key):
         return key in self._attr_defs_by_key
 
+    def __iter__(self):
+        for key in self._attr_defs_by_key:
+            yield key
+
     def get(self, key, default=None):
         if key in self._attr_defs_by_key:
             return self[key]