LinkedIn API 403(Forbidden) on any request url including v2 - api

Question

in ASP.NET MVC app I'm trying to use LinkedIn for user Authentication and get the user's full profile.
I'm usin OpenAuth (DotNetOpenAuth and Microsoft.AspNet.Membership.OpenAuth)
Request for User Data
private const string UserInfoEndpoint = "https://api.linkedin.com/v1/people/~" + Fields;
var uri = BuildUri(UserInfoEndpoint, new NameValueCollection { { "oauth2_access_token", accessToken } });
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
using (var webResponse = webRequest.GetResponse())
using (var stream = webResponse.GetResponseStream())
{
if (stream == null)
return null;
using (var textReader = new StreamReader(stream))
{
var xml = textReader.ReadToEnd();
var extraData = XElement.Parse(xml)
.Elements()
.ToDictionary(
el => el.Name.LocalName,
el => el.Value
);
extraData.Add("accesstoken", accessToken);
return extraData;
}
}
This making a successful get of user basic data. but when I change the url like below then it returning 403 Forbidden
private const string UserInfoEndpoint = "https://api.linkedin.com/v2/people/~" + Fields;
or
private const string UserInfoEndpoint = "https://api.linkedin.com/v2/me/?";
I noticed about partnership program, Is that what I need to access these url's? or what is really wrong here?
This docs about the v2 API but nothing about partnership program

Answer 1

if you are using V1 ( till 1st march ) then this is valid :
https://api.linkedin.com/v1/people/~
This url is related to r_basicprofile
if you are moving to V2 then you can't use this url because in V2 you have to take permission from linked to use r_basicprofile
in V2 you can use : r_liteprofile for firstName,lastName,profilePicture,id
r_emailaddress for getting emailAddress
Check this : https://learn.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/migration-faq?context=linkedin/consumer/context