Insufficient sending permission for the target audience on behalf of the viewer

Question

I have the following code:

private void CheckAuthorization() { string app_id = "x"; string app_secret = "x"; string scope = "publish_stream,publish_actions"; if (Request["code"] == null) { Response.Redirect(string.Format( "https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}", app_id, Request.Url.AbsoluteUri, scope)); } else { Dictionary<string, string> tokens = new Dictionary<string, string>(); string url = string.Format("https://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&scope={2}&code={3}&client_secret={4}", app_id, Request.Url.AbsoluteUri, scope, Request["code"].ToString(), app_secret); HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; using (HttpWebResponse response = request.GetResponse() as HttpWebResponse) { StreamReader reader = new StreamReader(response.GetResponseStream()); string vals = reader.ReadToEnd(); foreach (string token in vals.Split('&')) { //meh.aspx?token1=steve&token2=jake&... tokens.Add(token.Substring(0, token.IndexOf("=")), token.Substring(token.IndexOf("=") + 1, token.Length - token.IndexOf("=") - 1)); } } string access_token = tokens["access_token"]; var client = new FacebookClient(access_token); //client.Post("/me/feed", new { message = "A simple test" }); var args = new Dictionary<string, object>(); args["message"] = "abc"; args["caption"] = "This is caption!"; args["description"] = "This is description!"; args["name"] = "This is name!"; args["picture"] = "picutre"; args["link"] = "http://www.bradspel.net/"; client.Post("/1418771281723422/feed", args); } } 

When publishing, I get the following:

(OAuthException - # 200) (# 200) Insufficient permission to publish to the target on behalf of the viewer

If I change client.post to this:

 client.Post("/me/feed", args); 

It works great.

So why doesn’t it work when I am going to post a specific wall? I set permission on this facebook page so that everyone can post messages. The facebook application is installed online.

Answer 1

By creating an extended page token and using it to make a message, everything works fine. See This: How to get a page access token by code?

I was surprised that this simple task was so difficult for work, and that help did not work out.

Answer 2

When posting to a page (as opposed to your own wall), our testing shows that you don’t necessarily like the brand page to publish it, but you will have to publish it with the permission to view “Friends” or better (for example, Public) to avoid this exceptions. Yes, you will need your users to publish publish_actions.