Agent cannot receive ticket data from subworkflow (active mode) during scheduled runs, but works manually

Questions
1

Hi n8n community,

I’ve run into a problem with my automation built around AI Agents and subworkflows.

Scenario:

  • I have a main “central” agent (bob) that should collect new e-mail tickets via a sub-agent (ticket-agent) and send a notification to Telegram.
  • bob is triggered on a schedule.
  • The main agent calls the sub-agent as a tool (Call Workflow Tool or similar).
  • Sub-agent uses an Execute Workflow Trigger, so it can be reliably called as a subworkflow/tool from the main agent.
  • Sub-agent returns tickets in response module

The issue:

  • When the main agent (“bob”) runs in “active” mode (workflow status: active), he fails to get ticket data from the sub-agent.
  • All internal executions complete successfully:
  • Schedule triggers once (no duplicates),
  • Sub-agent fetches and processes tickets (verified in logs/UI),
  • Response node in the sub-agent returns correct ticket data.
  • BUT:
  • The output never reaches the main agent (“bob”) or the Telegram node
    • Getting notification - There was an error: “The workflow did not return a response”

If I run “bob” manually in debug/test, everything works perfectly:

  • The ticket-agent returns the ticket data.

Does anyone have any idea what this could be?

Here workflows

2

Hi there, welcome to the community, may i ask you to share your workflow so we can debug it better?

3

Sure