Not joined

The session called a collaboration method that needs a participant (presence, replica submits, per-participant undo, branch approval) without joining first.

#Common causes

• collab.join was never called for this session, or the session left.

#Fixes

• Call collab.join with the session handle, then retry.

• Code: ARA2502

• Constant: collab::NOT_JOINED

• Reported by: ara-collab