Weird error with Facebook Messenger Platform/bot Welcome Confugration - facebook

Question

I'm getting a weird error while configuring welcome message for my Messenger bot. I've been using the same code (as shown below) and it has just been working fine until last night. I tried it with both cURL and Postman. Neither of them works.
curl -X POST -H "Content-Type: application/json" -d '{
"setting_type":"call_to_actions",
"thread_state":"new_thread",
"call_to_actions":[
{
"message":{
"text":"Welcome to My Company!"
}
}
]
}' "https://graph.facebook.com/v2.6/<PAGE_ID>/thread_settings?access_token=<PAGE_ACCESS_TOKEN>"
Error message when executing the code above:
{"error":{"message":"(#100) Invalid keys \"message\" were found in param \"call_to_actions[0]\".","type":"OAuthException","code":100,"fbtrace_id":"Hn42Wa+hapI"}}%
I can confirm both PAGE_ID and PAGE_ACCESS_TOKEN are correct as trying to delete the welcome message with the following code works fine.
curl -X POST -H "Content-Type: application/json" -d '{
"setting_type":"call_to_actions",
"thread_state":"new_thread",
"call_to_actions":[
{
"message":{
"text":"Welcome to My Company!"
}
}
]
}' "https://graph.facebook.com/v2.6/<PAGE_ID>/thread_settings?access_token=<PAGE_ACCESS_TOKEN>"
Also, the code I'm using is exactly the same as shown on the Facebook official API doc. I don't understand why it's saying "message" is not a valid key. Is anyone experiencing the same problem? Did Facebook change their api?
Any help will be much appreciated!

Answer 1

The docs are now updated, you need to define your payload in payload parameter now (a UTF-8 encoded string), eg:
"call_to_actions":[
{
"payload":"USER_DEFINED_PAYLOAD"
}
]

Answer 2

Docs updated:
https://developers.facebook.com/docs/messenger-platform/thread-settings/greeting-text
Example:
curl -X POST -H "Content-Type: application/json" -d '{
"setting_type":"greeting",
"greeting":{
"text":"Welcome to My Company!"
}
}' "https://graph.facebook.com/v2.6/me/thread_settings?access_token=PAGE_ACCESS_TOKEN"

Answer 3

I get the same issue and fix it.
I think your json of request is
let messageData = {
"setting_type":"call_to_actions",
"thread_state":"new_thread",
"call_to_actions":[
{
"payload":"welcome_payload"
}
]
}
request({
url: 'https://graph.facebook.com/v2.6/me/thread_settings',
qs: {access_token:token},
method: 'POST',
json: {
messageData
}
}
but it will not work and log will say you have no "setting_type" = =a
try this one
request({
url: 'https://graph.facebook.com/v2.6/me/thread_settings',
qs: {access_token:token},
method: 'POST',
json: {
setting_type:"call_to_actions",
thread_state:"new_thread",
call_to_actions:[
{
"payload":"welcome_payload"
}
]
}
}
it work for me.

Answer 4

This error was due to an API change.
New call:
curl -X POST -H "Content-Type: application/json" -d '{
"setting_type":"call_to_actions",
"thread_state":"new_thread",
"call_to_actions":[{
"payload":"START"
}]
}' "https://graph.facebook.com/v2.6/<PAGE_ID>/thread_settings?access_token=<PAGE_TOKEN>"
Just add a payload like {"payload":"START"}
If a user press the "Getting started" button, you receive this payload in your messageHandler (webhook). Check if $incomingMessage == "START" and send back your structured message, or whatever you want.
Messages like before are not supported anymore.
Bug report: https://developers.facebook.com/bugs/1751749508372552/