# 保留标题

点击销售单/退货单右侧的“预订”按钮

[![crm-order-zh.png](https://bookstack-media.s3.us-west-2.amazonaws.com/uploads/images/gallery/2021-11/scaled-1680-/CMvcrm-order-zh.png)](https://bookstack-media.s3.us-west-2.amazonaws.com/uploads/images/gallery/2021-11/CMvcrm-order-zh.png)

成功后，将鼠标悬停在销售单/退货单的标题上，会出现应收款编号

[![reserved-zh.png](https://bookstack-media.s3.us-west-2.amazonaws.com/uploads/images/gallery/2021-11/scaled-1680-/reserved-zh.png)](https://bookstack-media.s3.us-west-2.amazonaws.com/uploads/images/gallery/2021-11/reserved-zh.png)