D365FO: Inventory marking between purchase order and transfer order

/// create/Update marking between purhcase order and transfer order
    /// </summary>
    /// <param name = "_inventTransId">receipt InventTrans PO</param>
    /// <param name = "_refInventTransId">Issue InventTrans TO</param>
    /// <param name = "_qtyToMark">qty</param>
    public void updateMarking(InventTransId   _inventTransId,
                                InventTransId   _refInventTransId,
                                Qty             _qtyToMark = 0)
    {
        Qty qtyToMark;
        try
        {
            TmpInventTransMark	  tmpInventTransMark;

            InventTransId         issueInventTransId   = _inventTransId;
            InventTransId         receiptInventTransId = _refInventTransId;

            InventTransOriginId receiptInventTransOriginId = InventTransOrigin::findByInventTransId(receiptInventTransId).RecId;
            InventTrans receiptInventTrans = InventTrans::findByInventTransOrigin(receiptInventTransOriginId);
            
            InventTransOriginId issueInventTransOriginId = InventTransOrigin::findByInventTransId(issueInventTransId).RecId;
            InventTrans issueInventTrans = InventTrans::findByInventTransOrigin(issueInventTransOriginId);
            
            InventTransMarkCollection collection = TmpInventTransMark::markingCollection(
            InventTransOrigin::find(receiptInventTransOriginId), receiptInventTrans.inventDim(), receiptInventTrans.Qty);
 
            collection.insertCollectionToTmpTable(tmpInventTransMark);

            select firstonly tmpInventTransMark
                where tmpInventTransMark.InventTransOrigin == issueInventTrans.InventTransOrigin
                    && tmpInventTransMark.InventDimId       == issueInventTrans.InventDimId;
 
            if (tmpInventTransMark.RecId != 0)
            {
                qtyToMark = issueInventTrans.Qty;
               
                tmpInventTransMark.QtyMarkNow =  qtyToMark;
                tmpInventTransMark.QtyRemain  -= tmpInventTransMark.QtyMarkNow;
              
                Map mapUpdated = new Map(Types::Int64, Types::Record);
                mapUpdated.insert(tmpInventTransMark.RecId, tmpInventTransMark);
 
                TmpInventTransMark::updateTmpMark(
                    receiptInventTransOriginId,
                    receiptInventTrans.inventDim(),
                    -qtyToMark,
                    mapUpdated.pack());
            }
        }
        catch (Exception::Error)
        {
            throw error(strFmt("FailMarkInventtransaction", _refInventTransId));
        }
    }