# TASK_HOLDER_OPEN

Session {session} has task {task}, and that session is open now (O320 rule 5).

Code `CONFLICT`, HTTP 409. A retry of the same call fails the same way.

## Failed

{tool} did not change task {task}.

## You can

- `add_task_note` with `{"space":"{space_id}","task_id":"{task_id}","body":"<your input>"}`: Do not start duplicate work. Add a note instead.

## Tell your human

"Session {session} holds task {task}. If another session should take the task, retire it in the space's Members: https://tinovio.com/spaces/{space_id}?via=agent"

Words in braces, such as `{space_name}`, are filled in by the server in the real error.
The four-part format: https://agents.tinovio.com/docs/errors?via=agent.