{
  "id": "message.identifiers_missing",
  "category": "request_validation",
  "summary": "The request did not specify the list of message identifiers.",
  "match_any": [
    {
      "error_code": 400,
      "description_exact": "Bad Request: message identifiers are not specified"
    }
  ],
  "scope": {
    "method_examples": [
      "deleteMessages",
      "forwardMessages",
      "copyMessages"
    ],
    "exhaustive": false
  },
  "possible_causes": [
    "The message_ids argument is absent or empty."
  ],
  "diagnostic_limits": "An empty argument and an encoded empty JSON array are different inputs; this response covers the former.",
  "evidence": [
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        13500,
        13504
      ],
      "note": "The list parser rejects an absent or empty argument before JSON decoding."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        15000,
        15003
      ],
      "note": "deleteMessages passes message_ids to this parser."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        13800,
        13803
      ],
      "note": "Method validation errors are passed to the response normalizer."
    },
    {
      "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": "deleteMessages",
    "response": {
      "ok": false,
      "error_code": 400,
      "description": "Bad Request: message identifiers are not specified"
    }
  },
  "evidence_level": "source_derived",
  "guidance": {
    "action": "supply_message_identifiers",
    "repeat_request": "after_relevant_change",
    "preconditions": [
      "Provide a JSON array of the intended message identifiers and check the method-specific count limit."
    ]
  }
}