diff --git a/connector_builder_agents/src/run.py b/connector_builder_agents/src/run.py
index de315a4..4fc7725 100644
--- a/connector_builder_agents/src/run.py
+++ b/connector_builder_agents/src/run.py
@@ -257,6 +257,11 @@ async def run_manager_developer_build(
 
         try:
             # We loop until the manager calls the `mark_job_success` or `mark_job_failed` tool.
+            # NOTE: previous_response_id is incompatible with SQLiteSession. SQLiteSession automatically
+            # maintains full conversation history across Runner.run() calls through persistent storage.
+            # Passing previous_response_id explicitly includes a response that SQLiteSession already loaded,
+            # causing OpenAI API to reject the request with "Duplicate item found with id ...".
+            # See: https://pypi.org/project/openai-agents/ for SQLiteSession documentation.
             # prev_response_id: str | None = None
             all_run_results = []
             while not is_complete(session_state):
@@ -268,7 +273,9 @@ async def run_manager_developer_build(
                     # previous_response_id=prev_response_id,
                 )
                 all_run_results.append(run_result)  # Collect all run results
-                # prev_response_id = run_result.raw_responses[-1].response_id if run_result.raw_responses else None
+                # prev_response_id = (
+                #     run_result.raw_responses[-1].response_id if run_result.raw_responses else None
+                # )
                 status_msg = f"\n🤖 {run_result.last_agent.name}: {run_result.final_output}"
                 update_progress_log(status_msg, session_state)
                 run_prompt = (