public List <Retrieval> GetRetrievalFormCommentsForAdjustmentVoucher()
        {
            List <Retrieval> retrievalwithcomments = scservice.GetRetrievalFormCommentsForAdjustmentVoucher();

            if (retrievalwithcomments != null || retrievalwithcomments.Count != 0)
            {
                return(retrievalwithcomments);
            }
            else
            {
                return(new List <Retrieval>()); //if no retrieval with adjustment voucher comments, return empty list so front end don't need to handle error
            }
        }