diff --git a/erpnext/portal/product_configurator/utils.py b/erpnext/portal/product_configurator/utils.py
index 405a6d8..15d5e9f 100644
--- a/erpnext/portal/product_configurator/utils.py
+++ b/erpnext/portal/product_configurator/utils.py
@@ -257,7 +257,8 @@
 
 	items = []
 	for attribute, value in selected_attributes.items():
-		items.append(set(attribute_value_item_map[(attribute, value)]))
+		filtered_items = attribute_value_item_map.get((attribute, value), [])
+		items.append(set(filtered_items))
 
 	return set.intersection(*items)