/// <summary>
        /// Get list of all routing/routed POs.
        /// </summary>
        /// <param name="customerId"></param>
        /// <param name="routed">null return all POs, true return routed POs(POs eikter have load or PickUpdate), false:return routing POs</param>
        /// <returns></returns>

        internal IEnumerable <RoutablePo> GetRoutablePos(string customerId, bool?routed, DateTime?startDate, DateTime?dcCancelDate, string buildingId)
        {
            return(_repos.GetRoutablePos(customerId, routed, startDate, dcCancelDate, buildingId));
        }