--调用请求
CUXOMLPKP请求调用如下：
    l_request_id := wsh_picking_batches_pkg.submit_release_request(p_batch_id    => p_batch_id,
                                                                   p_log_level   => 0 ,
                                                                   p_num_workers => nvl(fnd_profile.value('WSH_PR_NUM_WORKERS' ),
                                                                                        1));
    IF l_request_id IS NULL OR l_request_id = 0 THEN
      errbuf  := '提交挑库选择列表生成请求出错.' ;
      retcode := '2';
      RETURN;
    END IF ;