A customer may complete a purchase through Google after first discovering your brand on TikTok. Click attribution alone can understate the value of some channels.

The Post-Purchase Survey asks customers where they first heard about your brand after checkout, adding another perspective to your attribution data.

**Highlights**

1. **Customize answer options:** Add sources such as TikTok, Google, or a friend.
2. **Connect answers to channels:** Map survey responses to marketing channels for analysis.
3. **Randomize options:** Shuffle answers to reduce selection bias.

**Get started:** Go to Attribuly → Marketing Analytics → Post-Purchase Survey → Setup.

[Set up the survey](https://app.attribuly.com/cherry/?utm_source=wechat&utm_medium=group&utm_campaign=changelog#/post-purchase-survey)

[Read the setup guide](/knowledge-preview/en/published/help/product-guides/post-purchase-survey/)