 <p>You don't need the curly braces around the ID. The curly braces indicate that you're going to put a variable there. Try:</p> <pre><code>http://api.linkedin.com/v1/groups/{2139884}/posts:(creation-timestamp,title,summary,creator:(first-name,last-name,picture-url,headline),likes,attachment:(image-url,content-domain,content-url,title,summary),relation-to-viewer)?category=discussion&amp;order=recency&amp;modified-since=1302727083000&amp;count=5 </code></pre>