报错码
| HTTP 状态码 | 错误类型 | 响应体 |
|---|---|---|
| 400 | 参数错误/额度不足 | { code: 400, message: "invalid request body | qty must be in 1..200 | city_id is required | insufficient credits or user not found" } |
| 401 | 凭据错误 | { code: 401, message: "invalid credentials" } |
| 409 | 并发冲突 | { code: 409, message: "another operation in progress" } |
| 500 | 服务器内部错误 | { code: 500, message: "..." } |