iOS : getting 404 error


#1

I am getting 404 error even after I authenticate my request.

po urlRequest
$0 = 0x0ac34050 <NSMutableURLRequest https://api.twitter.com/1.1/favorites/create.json>

po [urlRequest allHTTPHeaderFields]
$1 = 0x0ac3bc40 {
Authorization = “OAuth oauth_consumer_key=“1234567890abcdefghij”, oauth_token=“abcdefghijklmnopq122345678”, oauth_signature_method=“HMAC-SHA1”, oauth_version=“1.0”, oauth_nonce=“3583886991608959850”, oauth_timestamp=“1369854877”, oauth_signature=“lW9KGcsQ7jXX7ta72KuKbY%2B1sFY%3D””;
id = 339788771950206976;
}

Any idea ?