Webhooks failing with “Invalid Scopes: pages_messaging_subscriptions” [duplicate]

Answer 1

I got this message today also. This is the bug from Facebook.

Right now, you can get Page Access Token via Graph API Explorer instead of App Dashboard.

1. Go to: https://developers.facebook.com/tools/explorer/
2. Click Get Token > Get User Access Token
3. Select the following scopes : manage_pages, pages_messaging, and pages_messaging_phone_number.
4. In Application selector, select your app.
5. Select your page to get Page Access Token.

Now you have Page Access Token, which you can use it for your Messenger Bot.

Check whether it worked by doing :

curl -X POST "https://graph.facebook.com/v2.6/me/subscribed_apps?access_token={{your_access_token}}"

Answer 2

I was also having the same difficulties. Its now resolved and they have now changed the way page access token is issued.