> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://dots.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).

# Promo code writing rules

When entering a promo code, the case does not matter. It will work when you enter in uppercase and lowercase letters.



Link to this article: [here](https://dots.crisp.help/en/article/promo-code-writing-rules-1i6lzaa/)