generated: '2026-07-19'
method: searched
source: https://open.wangdian.cn/qyb/open/apidoc/doc?path=trade_query.php
docs: https://open.wangdian.cn/open/guide?path=guide_kfzn
api: Wangdiantong Open Platform API (openapi2)
format: custom-envelope
envelope:
  fields:
  - name: code
    type: int
    description: Status code returned by every method. 0 indicates success; any non-zero value indicates failure.
  - name: message
    type: string
    description: Human-readable status or error description accompanying the code.
success_code: 0
note: >-
  The Open Platform returns a uniform code/message envelope on every openapi2 method. A full registry
  of non-zero failure codes is documented per method inside the API reference (login-gated for the
  detailed pages) and is not enumerated verbatim here to avoid fabrication; the envelope contract and
  success semantics above are captured from the published trade_query.php reference.