@ -640,7 +640,7 @@ class Graph(BaseModel):
return False
parallel_start_node_ids: dict[str, list[str]] = {}
for branch_node_id in routes_node_ids.items():
for branch_node_id in routes_node_ids:
if branch_node_id in reverse_edge_mapping:
for graph_edge in reverse_edge_mapping[branch_node_id]:
if graph_edge.source_node_id not in parallel_start_node_ids: