接口调用流程图

<h4>红字发票开具</h4> <h4>新版：</h4> <p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=143267af3d72c1549a492d0166c15d62&amp;amp;file=file.jpg" alt="" /></p> <h4>旧版：</h4> <p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=ebf14974bf2bfdd3b25ba6b2a81271fa&amp;amp;file=file.png" alt="" /></p>