Look at the code snippet <script> FB.ui( { method: 'send', message: 'Test Request', to: [61110868, 500335390], link: "https://developers.facebook.com" } ); </script> This script works fine when I test it on api test console but when I use the same code in my site then it only get the first user from given user Ids, it does not populate all the users mentioned in to:'userIds'. Can you help me what am I doing wrong. Some blogs says that FB SDK does not support this, but FB API documentation says that we can do this. Can you guide me what is problem with this code?