# 换汇

换汇相关接口

 - [POST /api/v2/fx/conversion/preorder](https://docs.paykka.com/zh-hans/collection/apis/openapi/%E6%8D%A2%E6%B1%87/fx_preorder.md): 卖出和买入金额只允许填一个
 - [POST /api/v2/fx/conversion/confirm](https://docs.paykka.com/zh-hans/collection/apis/openapi/%E6%8D%A2%E6%B1%87/fx_confirm.md)
 - [POST /api/v2/fx/conversion/inquiry](https://docs.paykka.com/zh-hans/collection/apis/openapi/%E6%8D%A2%E6%B1%87/fx_inquiry.md)
 - [POST /api/v2/fx/conversion/notify](https://docs.paykka.com/zh-hans/collection/apis/openapi/%E6%8D%A2%E6%B1%87/fx_notify.md)