Your Sinch Conversation API app requires specific permissions in order to integrate with your Facebook Page. These are set in the Sinch Customer Dashboard.
The table below details the required permissions and the reason each permission is required:
||Why do we need it?
||Allows Sinch to send messages on behalf of your Facebook Page using your Conversation API app.
||Allows Sinch to subscribe to incoming message events and message deliveries for your Facebook Page. This allows the Conversation API to forward them to your Conversation API app.
||Allows Sinch to display the Facebook Pages you want your Conversation API app to integrate with, and allows Sinch to get Access Tokens for your Facebook Pages.