// second attempt should succeed, because the Oid would have
// been updated in the attempt
ObjectAdapter targetAdapter = getActionModel().getTargetAdapter();
// forward onto the target page with the concurrency exception
final EntityPage entityPage = new EntityPage(targetAdapter, ex);
ActionParametersFormPanel.this.setResponsePage(entityPage);
getAuthenticationSession().getMessageBroker().addWarning(ex.getMessage());
return;