{
  "id": "file.id_invalid",
  "category": "target_resolution",
  "summary": "The server could not resolve the supplied file_id.",
  "match_any": [
    {
      "error_code": 400,
      "description_exact": "Bad Request: invalid file_id"
    }
  ],
  "scope": {
    "method_examples": [
      "getFile"
    ],
    "exhaustive": false
  },
  "possible_causes": [
    "A remote-file lookup failed and the normalizer replaced its original error."
  ],
  "diagnostic_limits": "The generic fallback does not identify a malformed ID, a bot-specific access issue, or permanent unavailability.",
  "evidence": [
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        7525,
        7527
      ],
      "note": "Remote-file lookup errors receive the invalid file_id fallback."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        85,
        108
      ],
      "note": "The fallback replaces only errors normalized to code 400."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        17032,
        17035
      ],
      "note": "getFile uses this remote-file lookup."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        165,
        205
      ],
      "note": "Adds the code-specific prefix and lowercases only the initial character of ordinary messages."
    }
  ],
  "example": {
    "method": "getFile",
    "response": {
      "ok": false,
      "error_code": 400,
      "description": "Bad Request: invalid file_id"
    }
  },
  "evidence_level": "source_derived",
  "guidance": {
    "action": "verify_file_identifier",
    "repeat_request": "after_relevant_change",
    "preconditions": [
      "Check that this bot received the exact file_id and that file_unique_id was not substituted."
    ]
  }
}