Note: This feature may not be available to you yet.
Linking your WhatsApp Business account to your Facebook shop gives you the option to have customers who visit your shop send you a message through the WhatsApp Business app.
To link these accounts, you must:
To start, create a shop in the Facebook Commerce Manager. Learn more about this process in this article.
Then, add your WhatsApp Business number to your shop and set WhatsApp as the Primary Contact Method. Detailed instructions on how to link your WhatsApp Business number to your shop can be found in this article.
Once these steps are completed, you can set up your shop so that customers can tap the Message button on your shop pages to start a chat with you in the WhatsApp Business app.