{
  "id": "file.url_invalid",
  "category": "file_input",
  "summary": "The HTTP URL was rejected.",
  "match_any": [
    {
      "error_code": 400,
      "description_exact": "Bad Request: wrong HTTP URL specified"
    }
  ],
  "scope": {
    "method_examples": [
      "sendPhoto",
      "sendDocument"
    ],
    "exhaustive": false
  },
  "possible_causes": [
    "The supplied external URL failed Telegram’s URL validation."
  ],
  "diagnostic_limits": "The response does not identify the invalid URL component or establish whether the resource is reachable.",
  "evidence": [
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        114,
        115
      ],
      "note": "Two upstream URL validation errors are rewritten to the same description."
    },
    {
      "source": "server-10.3",
      "path": "telegram-bot-api/Client.cpp",
      "lines": [
        85,
        106
      ],
      "note": "The rewrite runs only after the error is normalized to code 400."
    },
    {
      "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": "sendPhoto",
    "response": {
      "ok": false,
      "error_code": 400,
      "description": "Bad Request: wrong HTTP URL specified"
    }
  },
  "evidence_level": "source_derived",
  "guidance": {
    "action": "correct_file_url",
    "repeat_request": "after_relevant_change",
    "preconditions": [
      "Provide a valid HTTP URL for the intended resource and check the selected method’s URL-input rules."
    ]
  }
}