This will come up when you are sending in a WhatsApp campaign template for approval, and will be applicable when you have variables in your header or body text.
To help Whatsapp understand what kind of message you want to send, you have the option to provide specific examples of the variables in your templates by adding for them here (ref screenshot below).
In case you have a media header in your template, you can also provide a sample file for the media header.
