{
  "id": "go/grpc-unknown-field",
  "signature": "rpc error: code = Unknown desc = unknown field in response: \"extra_data\"",
  "signature_zh": "rpc 错误：代码 = Unknown 描述 = 响应中的未知字段：\"extra_data\"",
  "regex": "rpc\\ error:\\ code\\ =\\ Unknown\\ desc\\ =\\ unknown\\ field\\ in\\ response:\\ \"extra_data\"",
  "domain": "go",
  "category": "data_error",
  "subcategory": null,
  "root_cause": "Client's proto definition is outdated and doesn't include a field that the server sends.",
  "root_cause_type": "generic",
  "root_cause_zh": "客户端的 proto 定义过时，未包含服务器发送的字段。",
  "versions": [
    {
      "version": "1.8",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "gRPC by default ignores unknown fields, but this error suggests strict parsing is enabled.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Incorrect field number can cause data corruption.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 1.0,
      "how": "Run protoc with the latest .proto file to update the generated Go code.",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.6,
      "how": "decoder := protojson.UnmarshalOptions{DiscardUnknown: true}; err := decoder.Unmarshal(data, msg)",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-08-23",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}