I am trying to update the plain text of an artifact using OSLC. I used OSLC to create the same artifact and that worked fine. While trying to update it throws a forbidden exception (Using same credentials as create). Also I am working on CLM 4.0. Here is the code snippet that I am using to PUT the artifact:

HttpPut put = new HttpPut(requirementURL);
        put.addHeader("Accept", "application/rdf+xml");
        put.addHeader("Content-Type", "application/rdf+xml");
        put.addHeader("OSLC-Core-Version", "2.0");
        put.addHeader("If-Match", requirementURL);
        //put.setEntity(new StringEntity(updatedContent, HTTP.UTF_8));
        //put.setEntity(new StringEntity(newContent, HTTP.UTF_8));
        put.setEntity(new StringEntity("test", HTTP.UTF_8));
        reqResponse = HttpUtils.sendPutForSecureDocument(server, put, login, password, httpclient, JTS_Server);
        reqResponse.getEntity().consumeContent();
        if (reqResponse.getStatusLine().getStatusCode() != 200) {
            throw new HttpResponseException(reqResponse.getStatusLine()
                    .getStatusCode(), reqResponse.getStatusLine()
                    .getReasonPhrase());
        }
        //If we get here then our PUT succeeded and the requirement should have our link now
       

The control goes to the throws block as the status code is 403 and not 200.
Is there anything specific that I need to do for this?