Weird error with Facebook Messenger Platform/bot Welcome Confugration

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.