A plugin developer creates a WAR file which is invalid or can't be successfully deployed during portal's auto deploy process. When the plugin developer starts the process, portal unsuccessfully deploys the WAR file. To avoid repetitive deployment tries, the WAR file is put on a black list. The developer fix the deployment issue and try again to deploy the WAR file. Although the file is on the black list, portal can start again the auto deploy process with the new file, because the black list contains an identification of the previous version.