{
  "id": "updates.concurrent_poll",
  "category": "update_delivery_concurrency",
  "summary": "Another getUpdates request interrupted the pending long poll.",
  "match_any": [
    {
      "error_code": 409,
      "description_exact": "Conflict: terminated by other getUpdates request; make sure that only one bot instance is running"
    }
  ],
  "scope": {
    "method_examples": [
      "getUpdates"
    ],
    "exhaustive": false
  },
  "possible_causes": [
    "Overlapping getUpdates requests for the same bot."
  ],
  "diagnostic_limits": "Overlapping requests may originate in one process or multiple deployments; the response does not prove how many bot processes exist.",
  "evidence": [
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        17493,
        17514
      ],
      "note": "The alternate branch emits a different description for termination by setWebhook."
    }
  ],
  "example": {
    "method": "getUpdates",
    "response": {
      "ok": false,
      "error_code": 409,
      "description": "Conflict: terminated by other getUpdates request; make sure that only one bot instance is running"
    }
  },
  "evidence_level": "source_derived",
  "guidance": {
    "action": "ensure_single_polling_owner",
    "repeat_request": "after_concurrency_change",
    "preconditions": [
      "Stop competing polling loops or establish ownership before resuming."
    ]
  }
}