/// <summary>
        /// Load Document Details
        /// </summary>
        /// <returns>error message or null</returns>
        public override String LoadDocumentDetails()
        {
            SetC_Currency_ID(Doc.NO_CURRENCY);
            MMatchInv matchInv = (MMatchInv)GetPO();

            SetDateDoc(matchInv.GetDateTrx());
            SetQty(matchInv.GetQty());
            //	Invoice Info
            int C_InvoiceLine_ID = matchInv.GetC_InvoiceLine_ID();

            _invoiceLine = new MInvoiceLine(GetCtx(), C_InvoiceLine_ID, null);
            //		BP for NotInvoicedReceipts
            int C_BPartner_ID = _invoiceLine.GetParent().GetC_BPartner_ID();

            SetC_BPartner_ID(C_BPartner_ID);
            //
            int M_InOutLine_ID = matchInv.GetM_InOutLine_ID();

            _receiptLine = new MInOutLine(GetCtx(), M_InOutLine_ID, null);
            //
            _pc = new ProductCost(GetCtx(),
                                  GetM_Product_ID(), matchInv.GetM_AttributeSetInstance_ID(), null);
            _pc.SetQty(GetQty());

            return(null);
        }
        /// <summary>
        /// Create Facts (the accounting logic) for
        ///  MXI.
        ///     (single line)
        ///  <pre>
        ///      NotInvoicedReceipts     DR			(Receipt Org)
        ///      InventoryClearing               CR
        ///      InvoicePV               DR      CR  (difference)
        ///  Commitment
        ///         Expense							CR
        ///         Offset					DR
        ///  </pre>
        /// </summary>
        /// <param name="as1"></param>
        /// <returns></returns>
        public override List <Fact> CreateFacts(MAcctSchema as1)
        {
            List <Fact> facts = new List <Fact>();

            //  Nothing to do
            if (GetM_Product_ID() == 0 ||                               //	no Product
                Env.Signum(GetQty().Value) == 0 ||
                Env.Signum(_receiptLine.GetMovementQty()) == 0)         //	Qty = 0
            {
                log.Fine("No Product/Qty - M_Product_ID=" + GetM_Product_ID()
                         + ",Qty=" + GetQty() + ",InOutQty=" + _receiptLine.GetMovementQty());
                return(facts);
            }
            MMatchInv matchInv = (MMatchInv)GetPO();

            //  create Fact Header
            Fact fact = new Fact(this, as1, Fact.POST_Actual);

            SetC_Currency_ID(as1.GetC_Currency_ID());

            /**	Needs to be handeled in PO Matching as1 no Receipt info
             * if (_pc.isService())
             * {
             *  log.Fine("Service - skipped");
             *  return fact;
             * }
             **/


            //  NotInvoicedReceipt      DR
            //  From Receipt
            Decimal  multiplier = Math.Abs(Decimal.Round(Decimal.Divide(GetQty().Value, _receiptLine.GetMovementQty()), 12, MidpointRounding.AwayFromZero));
            FactLine dr         = fact.CreateLine(null,
                                                  GetAccount(Doc.ACCTTYPE_NotInvoicedReceipts, as1),
                                                  as1.GetC_Currency_ID(), Env.ONE, null); // updated below

            if (dr == null)
            {
                _error = "No Product Costs";
                return(null);
            }
            dr.SetQty(GetQty());
            //	dr.setM_Locator_ID(_receiptLine.getM_Locator_ID());
            //	MInOut receipt = _receiptLine.getParent();
            //	dr.setLocationFromBPartner(receipt.getC_BPartner_Location_ID(), true);	//  from Loc
            //	dr.setLocationFromLocator(_receiptLine.getM_Locator_ID(), false);		//  to Loc
            Decimal temp = dr.GetAcctBalance();

            //	Set AmtAcctCr/Dr from Receipt (sets also Project)
            if (!dr.UpdateReverseLine(MInOut.Table_ID,          //	Amt updated
                                      _receiptLine.GetM_InOut_ID(), _receiptLine.GetM_InOutLine_ID(),
                                      multiplier))
            {
                _error = "Mat.Receipt not posted yet";
                return(null);
            }
            log.Fine("CR - Amt(" + temp + "->" + dr.GetAcctBalance()
                     + ") - " + dr.ToString());

            //  InventoryClearing               CR
            //  From Invoice
            MAccount expense = _pc.GetAccount(ProductCost.ACCTTYPE_P_InventoryClearing, as1);

            if (_pc.IsService())
            {
                expense = _pc.GetAccount(ProductCost.ACCTTYPE_P_Expense, as1);
            }
            Decimal LineNetAmt = _invoiceLine.GetLineNetAmt();

            multiplier = Math.Abs(Decimal.Round(Decimal.Divide(GetQty().Value, _invoiceLine.GetQtyInvoiced()), 12, MidpointRounding.AwayFromZero));
            if (multiplier.CompareTo(Env.ONE) != 0)
            {
                LineNetAmt = Decimal.Multiply(LineNetAmt, multiplier);
            }
            if (_pc.IsService())
            {
                LineNetAmt = dr.GetAcctBalance();       //	book out exact receipt amt
            }
            FactLine cr = null;

            if (as1.IsAccrual())
            {
                cr = fact.CreateLine(null, expense,
                                     as1.GetC_Currency_ID(), null, LineNetAmt); //	updated below
                if (cr == null)
                {
                    log.Fine("Line Net Amt=0 - M_Product_ID=" + GetM_Product_ID()
                             + ",Qty=" + GetQty() + ",InOutQty=" + _receiptLine.GetMovementQty());
                    facts.Add(fact);
                    return(facts);
                }
                cr.SetQty(Decimal.Negate(GetQty().Value));
                temp = cr.GetAcctBalance();
                //	Set AmtAcctCr/Dr from Invoice (sets also Project)
                if (as1.IsAccrual() && !cr.UpdateReverseLine(MInvoice.Table_ID,                 //	Amt updated
                                                             _invoiceLine.GetC_Invoice_ID(), _invoiceLine.GetC_InvoiceLine_ID(), multiplier))
                {
                    _error = "Invoice not posted yet";
                    return(null);
                }
                log.Fine("DR - Amt(" + temp + "->" + cr.GetAcctBalance()
                         + ") - " + cr.ToString());
            }
            else        //	Cash Acct
            {
                MInvoice invoice = _invoiceLine.GetParent();
                if (as1.GetC_Currency_ID() == invoice.GetC_Currency_ID())
                {
                    LineNetAmt = MConversionRate.Convert(GetCtx(), LineNetAmt,
                                                         invoice.GetC_Currency_ID(), as1.GetC_Currency_ID(),
                                                         invoice.GetDateAcct(), invoice.GetC_ConversionType_ID(),
                                                         invoice.GetAD_Client_ID(), invoice.GetAD_Org_ID());
                }
                cr = fact.CreateLine(null, expense,
                                     as1.GetC_Currency_ID(), null, LineNetAmt);

                cr.SetQty(Decimal.Negate(Decimal.Multiply(GetQty().Value, multiplier)));
            }
            cr.SetC_Activity_ID(_invoiceLine.GetC_Activity_ID());
            cr.SetC_Campaign_ID(_invoiceLine.GetC_Campaign_ID());
            cr.SetC_Project_ID(_invoiceLine.GetC_Project_ID());
            cr.SetC_UOM_ID(_invoiceLine.GetC_UOM_ID());
            cr.SetUser1_ID(_invoiceLine.GetUser1_ID());
            cr.SetUser2_ID(_invoiceLine.GetUser2_ID());


            //  Invoice Price Variance  difference
            Decimal ipv = Decimal.Negate(Decimal.Add(cr.GetAcctBalance(), dr.GetAcctBalance()));

            if (Env.Signum(ipv) != 0)
            {
                FactLine pv = fact.CreateLine(null,
                                              _pc.GetAccount(ProductCost.ACCTTYPE_P_IPV, as1),
                                              as1.GetC_Currency_ID(), ipv);
                pv.SetC_Activity_ID(_invoiceLine.GetC_Activity_ID());
                pv.SetC_Campaign_ID(_invoiceLine.GetC_Campaign_ID());
                pv.SetC_Project_ID(_invoiceLine.GetC_Project_ID());
                pv.SetC_UOM_ID(_invoiceLine.GetC_UOM_ID());
                pv.SetUser1_ID(_invoiceLine.GetUser1_ID());
                pv.SetUser2_ID(_invoiceLine.GetUser2_ID());
            }
            log.Fine("IPV=" + ipv + "; Balance=" + fact.GetSourceBalance());

            MInOut inOut       = _receiptLine.GetParent();
            bool   isReturnTrx = inOut.IsReturnTrx();

            if (!IsPosted())
            {
                //	Cost Detail Record - data from Expense/IncClearing (CR) record
                MCostDetail.CreateInvoice(as1, GetAD_Org_ID(),
                                          GetM_Product_ID(), matchInv.GetM_AttributeSetInstance_ID(),
                                          _invoiceLine.GetC_InvoiceLine_ID(), 0,                                                                                                                  //	No cost element
                                          Decimal.Negate(cr.GetAcctBalance()), isReturnTrx ? Decimal.Negate(Utility.Util.GetValueOfDecimal(GetQty())) : Utility.Util.GetValueOfDecimal(GetQty()), //	correcting
                                          GetDescription(), GetTrx(), GetRectifyingProcess());

                //  Update Costing
                UpdateProductInfo(as1.GetC_AcctSchema_ID(),
                                  MAcctSchema.COSTINGMETHOD_StandardCosting.Equals(as1.GetCostingMethod()));
            }
            //
            facts.Add(fact);

            /** Commitment release										****/
            if (as1.IsAccrual() && as1.IsCreateCommitment())
            {
                fact = Doc_Order.GetCommitmentRelease(as1, this,
                                                      Utility.Util.GetValueOfDecimal(GetQty()), _invoiceLine.GetC_InvoiceLine_ID(), Env.ONE);
                if (fact == null)
                {
                    return(null);
                }
                facts.Add(fact);
            }   //	Commitment

            return(facts);
        }