[票证通单据上的字母J、Y、L、S分别代表什么意思？](%E7%A5%A8%E8%AF%81%E9%80%9A%E4%BE%9B%E5%BA%94%E5%95%86%E5%90%8D%E7%A7%B0%E4%B8%80%E6%A0%8F%E6%98%BE%E7%A4%BA%E7%9A%84%EF%BC%88%E7%B4%A2%E8%AF%81%EF%BC%9AJY%EF%BC%89%E5%92%8C%EF%BC%88%E7%B4%A2%E8%AF%81%EF%BC%9AJYL%EF%BC%89%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%E5%90%97%EF%BC%9F.md) [提供的票证通单据上已经有J和Y，客户还要求L也显示，应该怎么操作？](%E5%AE%A2%E6%88%B7%E5%8D%95%E4%BD%8D%E8%A6%81%E6%B1%82%E4%BE%9B%E5%BA%94%E5%95%86%E5%90%8D%E7%A7%B0%E7%9A%84%E7%B4%A2%E8%AF%81%E4%B8%BAJYL%E6%80%8E%E4%B9%88%E5%8A%9E%EF%BC%9F.md)