# 兑换流程

{% hint style="info" %}
注意：步骤17获取calldata数据可以有两种方式，一是前端直接通过调取合约生成calldata数据，二是通过调取接口得到calldata数据，详解请看【获取calldata数据】
{% endhint %}

<figure><img src="/files/KkJOSAWdyjpMClkJqgAQ" alt=""><figcaption></figcaption></figure>


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