> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://cheddarflow.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to add a coupon code

You can add a valid coupon code into the "Add promotion code" field located on the left hand side. If you are on a mobile device, you can find this field by accessing "view details" at the top right corner.

**Desktop example**


![](https://storage.crisp.chat/users/helpdesk/website/46d9c75ded2f5c00/screen-shot-on-2020-05-18-at-0_wvwooi.png)

**Mobile example**


![](https://storage.crisp.chat/users/helpdesk/website/46d9c75ded2f5c00/screen-shot-2020-05-18-at-0945_1xic23t.png)