"message": "(#200) If posting to a group, requires app being installed in the group, and either publish_to_groups permission with user token, or both pages_read_engagement and pages_manage_posts permission with page token; If posting to a page, requires both pages_read_engagement and pages_manage_posts as an admin with sufficient administrative permission", "type": "OAuthException", "code": 200, "fbtrace_id": "ACRMhidIqnSc8bi7DH3JsC6" } }
Most likely means your app misses the permission, has any other option actions, you are using a wrong token, mixing up IDs or something like that ... However: Try being more specific by adding more details.