protected static FR_Guids Execute(DbConnection Connection, DbTransaction Transaction, P_L5BD_SCDP_1347 Parameter, CSV2Core.SessionSecurity.SessionSecurityTicket securityTicket = null)
        {
            #region UserCode
            var returnValue = new FR_Guids();
            //Put your code here

            var savedProcesses = new List <Guid>();

            foreach (var billHeaderID in Parameter.BIL_BillHeaderIDs.ToList())
            {
                #region Prerequisites

                var billHeader = new ORM_BIL_BillHeader();
                billHeader.Load(Connection, Transaction, billHeaderID);

                //assigned payments
                var assignedPaymentsQuery = new ORM_BIL_BillHeader_AssignedPayment.Query();
                assignedPaymentsQuery.BIL_BillHeader_RefID = billHeader.BIL_BillHeaderID;
                assignedPaymentsQuery.Tenant_RefID         = securityTicket.TenantID;
                var foundAssignmentPayments = ORM_BIL_BillHeader_AssignedPayment.Query.Search(Connection, Transaction, assignedPaymentsQuery);

                //calculated sum of payments to the present day
                var paymentsSummForCurrentDate = foundAssignmentPayments.Where(fap => fap.Creation_Timestamp <= DateTime.Now).Sum(x => x.AssignedValue);

                //customer
                var customerQuery = new ORM_CMN_BPT_CTM_Customer.Query();
                customerQuery.Tenant_RefID = securityTicket.TenantID;
                customerQuery.Ext_BusinessParticipant_RefID = billHeader.BillRecipient_BuisnessParticipant_RefID;
                var foundCustomer = ORM_CMN_BPT_CTM_Customer.Query.Search(Connection, Transaction, customerQuery).Single();

                //Model
                ORM_ACC_DUN_Dunning_Model.Query defaultDunningModelQuery = new ORM_ACC_DUN_Dunning_Model.Query();
                defaultDunningModelQuery.Tenant_RefID           = securityTicket.TenantID;
                defaultDunningModelQuery.IsDefaultCustomerModel = true;
                var foundDunningModel = ORM_ACC_DUN_Dunning_Model.Query.Search(Connection, Transaction, defaultDunningModelQuery).SingleOrDefault();

                //Assignment to levels
                var modelToLevelsAssignmentQuery = new ORM_ACC_DUN_DunningLevel_ModelAssignment.Query();
                modelToLevelsAssignmentQuery.Dunning_Model_RefID = foundDunningModel.ACC_DUN_Dunning_ModelID;
                modelToLevelsAssignmentQuery.Tenant_RefID        = securityTicket.TenantID;
                var foundModelToLevelsAssignments = ORM_ACC_DUN_DunningLevel_ModelAssignment.Query.Search(Connection, Transaction, modelToLevelsAssignmentQuery);

                var minimalLevelInSequence = foundModelToLevelsAssignments.OrderBy(la => la.OrderSequence).First();



                //Levels
                var dunningLevels = new ORM_ACC_DUN_Dunning_Level();
                //dunningLevels.Load(Connection, Transaction, foundModelToLevelsAssignment.Dunning_Level_RefID);

                #endregion

                //model to customer assignment
                var modelToCustomerAssignment = new ORM_ACC_DUN_Dunning_Model_2_Customer();
                modelToCustomerAssignment.Tenant_RefID = securityTicket.TenantID;
                modelToCustomerAssignment.ACC_DUN_DunningModel_RefID = foundDunningModel.ACC_DUN_Dunning_ModelID;
                modelToCustomerAssignment.CMN_BPT_CTM_Customer_RefID = foundCustomer.CMN_BPT_CTM_CustomerID;
                var savedModelToCustomerAssignmentID = new FR_Guid(modelToCustomerAssignment.Save(Connection, Transaction), modelToCustomerAssignment.AssignmentID);

                //dunning process
                P_L2BD_SADDP_1412 saveDunningProcessParameter = new P_L2BD_SADDP_1412();
                saveDunningProcessParameter.DunnedCustomer_RefID          = foundCustomer.CMN_BPT_CTM_CustomerID;
                saveDunningProcessParameter.DunningModel_RefID            = foundDunningModel.ACC_DUN_Dunning_ModelID;
                saveDunningProcessParameter.Current_DunningLevel_RefID    = minimalLevelInSequence.Dunning_Level_RefID;
                saveDunningProcessParameter.DunnedAmount_Total            = billHeader.TotalValue_BeforeTax - paymentsSummForCurrentDate;
                saveDunningProcessParameter.Currency_RefID                = billHeader.Currency_RefID;
                saveDunningProcessParameter.ReachesNextDunningLevelAtDate = DateTime.Now.AddDays(minimalLevelInSequence.WaitPeriodToNextDunningLevel_In_Days);

                var savedDunningProcessID = cls_Save_ACC_DUN_DunningProcess.Invoke(Connection, Transaction, saveDunningProcessParameter, securityTicket).Result;

                //dunning process member bills
                P_L2BD_SADDPMB_1359 saveMemberBillsParameter = new P_L2BD_SADDPMB_1359();
                saveMemberBillsParameter.BIL_BillHeader_RefID         = billHeaderID;
                saveMemberBillsParameter.ACC_DUN_DunningProcess_RefID = savedDunningProcessID;
                saveMemberBillsParameter.ApplicableProcessDunningFees = 0;
                saveMemberBillsParameter.CurrentUnpaidBillFraction    = 0;

                var savedMemberBillID = cls_Save_ACC_DUN_DunningProcess_MemberBill.Invoke(Connection, Transaction, saveMemberBillsParameter, securityTicket).Result;
                savedProcesses.Add(savedMemberBillID);

                //dunning process history
                var dunningProcessHistory = new ORM_ACC_DUN_DunningProcess_History();
                dunningProcessHistory.ACC_DUN_Dunning_Level_RefID  = minimalLevelInSequence.Dunning_Level_RefID;
                dunningProcessHistory.ACC_DUN_DunningProcess_RefID = savedDunningProcessID;
                dunningProcessHistory.Creation_Timestamp           = DateTime.Now;
                dunningProcessHistory.DunningProcessFee_IncludingThisDunningLevel = 0;
                dunningProcessHistory.IsCurrentStep = true;
                dunningProcessHistory.Tenant_RefID  = securityTicket.TenantID;

                var savedDunningProcessHistoryID = new FR_Guid(dunningProcessHistory.Save(Connection, Transaction), dunningProcessHistory.ACC_DUN_DunningProcess_HistoryID);
            }

            returnValue.Result = savedProcesses.ToArray();

            return(returnValue);

            #endregion UserCode
        }
        protected static FR_Guid Execute(DbConnection Connection, DbTransaction Transaction, P_L5BD_SDPLC_1642 Parameter, CSV2Core.SessionSecurity.SessionSecurityTicket securityTicket = null)
        {
            #region UserCode
            var returnValue = new FR_Guid();

            var details = Parameter.BillHeaderWithDetails.DunningDetails;
            var bill    = Parameter.BillHeaderWithDetails.Bill;

            //model
            var model = new ORM_ACC_DUN_Dunning_Model();
            model.Load(Connection, Transaction, details.ACC_DUN_Dunning_ModelID);

            var modelToLevelsAssignmentQuery = new ORM_ACC_DUN_DunningLevel_ModelAssignment.Query();
            modelToLevelsAssignmentQuery.Dunning_Model_RefID = model.ACC_DUN_Dunning_ModelID;
            modelToLevelsAssignmentQuery.Dunning_Level_RefID = Parameter.NextLevelID;
            modelToLevelsAssignmentQuery.Tenant_RefID        = securityTicket.TenantID;
            var foundModelToLevelsAssignment = ORM_ACC_DUN_DunningLevel_ModelAssignment.Query.Search(Connection, Transaction, modelToLevelsAssignmentQuery).Single();

            //dunning process loading
            var dunningProcess = new ORM_ACC_DUN_DunningProcess();
            dunningProcess.Load(Connection, Transaction, details.ACC_DUN_DunningProcessID);
            dunningProcess.Current_DunningLevel_RefID    = Parameter.NextLevelID;
            dunningProcess.ReachesNextDunningLevelAtDate = DateTime.Now.AddDays(foundModelToLevelsAssignment.WaitPeriodToNextDunningLevel_In_Days);
            dunningProcess.Save(Connection, Transaction);

            //get all previous history statuses
            var historyQuery = new ORM_ACC_DUN_DunningProcess_History.Query();
            historyQuery.ACC_DUN_DunningProcess_RefID = dunningProcess.ACC_DUN_DunningProcessID;
            historyQuery.Tenant_RefID = securityTicket.TenantID;
            var foundHistories = ORM_ACC_DUN_DunningProcess_History.Query.Search(Connection, Transaction, historyQuery).ToList();

            decimal summOfFees = 0;

            //and set their IsCurrentStep property
            foreach (var history in foundHistories)
            {
                history.IsCurrentStep = false;
                history.Save(Connection, Transaction);

                //while iterating, create summ of all fees in histories for dunning process
                if (history.IsSentToCustomer)
                {
                    summOfFees += history.DunningProcessFee_IncludingThisDunningLevel;
                }
            }

            var newHistoryEntity = new ORM_ACC_DUN_DunningProcess_History();
            newHistoryEntity.ACC_DUN_Dunning_Level_RefID  = Parameter.NextLevelID;
            newHistoryEntity.ACC_DUN_DunningProcess_RefID = dunningProcess.ACC_DUN_DunningProcessID;
            newHistoryEntity.DunningProcessFee_IncludingThisDunningLevel = Parameter.FeeForLevel;
            newHistoryEntity.IsCurrentStep = true;
            newHistoryEntity.Tenant_RefID  = securityTicket.TenantID;

            var savedNewHistoryID = new FR_Guid(newHistoryEntity.Save(Connection, Transaction), newHistoryEntity.ACC_DUN_DunningProcess_HistoryID).Result;

            var memberBills = new ORM_ACC_DUN_DunningProcess_MemberBill();
            memberBills.Load(Connection, Transaction, details.ACC_DUN_DunningProcess_MemberBillID);
            memberBills.ApplicableProcessDunningFees = summOfFees + newHistoryEntity.DunningProcessFee_IncludingThisDunningLevel; //added fee from new history also

            #region Save booking line for dunning fee

            var bookingParam = new CL3_Payments.Complex.Manipulation.P_L3PY_CATfDF_0849
            {
                DunningFee   = Parameter.FeeForLevel,
                BillHeaderID = Parameter.BillHeaderWithDetails.Bill.BIL_BillHeaderID
            };
            CL3_Payments.Complex.Manipulation.cls_Create_AccountingTransaction_for_Dunning_Fee.Invoke(Connection, Transaction, bookingParam, securityTicket);

            #endregion

            returnValue.Result = savedNewHistoryID;

            return(returnValue);

            #endregion UserCode
        }