> For the complete documentation index, see [llms.txt](https://docs.chatalog.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chatalog.ai/platform-setup/things-to-note-when-setting-up-the-platform.md).

# Things to note when setting up the platform

Next, there are many places that are set according to the channel. Please pay attention to whether the channel is selected correctly

(Including [Contact](/contact-setup/contact.md) / [Broadcast](/broadcast-setup/broadcast-whatsapp.md) / [Post Auto Reply](/post-auto-reply/post-auto-reply/post-auto-reply-setup.md) / [Chat Flow](/crm-quickstarts/customized-flow.md))

<figure><img src="https://lh7-us.googleusercontent.com/qiwyccfU1lCF9BC3lVJBrTnijogG4l0Eqxyk_yu5PqoGAKABY9N4YSPuYKL5uaa1aqeKQAziI4RtwtQ4WvltRNlvq2ngxV0O_LZvJ8FvKAYlLlit4su3NNgTs9ThInNHpz3pt-NinLcmqz-jV98D6eI" alt=""><figcaption></figcaption></figure>

Also, be mindful of the file size limits on **WhatsApp**

<figure><img src="https://lh7-us.googleusercontent.com/4Y7GopX1HIBbKRPx15_JwQFL04v-FidyTkkTTVDjVpnyz2Am60M6YFn7PV6l4OKnIEr1L6p21CTce6Zb4ieQBqNH5Fpi3JgpF8b9GNhlGceG56eUuHjDrOQZVQuZwWwiXWE1BeRL6jh4b7b2Ea23bbc" alt=""><figcaption></figcaption></figure>