I am trying to send a link of the form "tel:xxxxxxxxxx" to the button template in facebook messenger platform API. I am getting an error that the url is of invalid type.
Is there any way of sending the telephone link using the messenger platform API?
Facebook released an update to the button template recently. You can now specify type = phone_number . Pay load should be the phone number (prefixed by +, isd code and area code. Example +15555555555).
You can find more info here.
https://developers.facebook.com/docs/messenger-platform/send-api-reference/button-template
Guru