All the following values during the Pre-Invoice Generation are rounded off before the invoice items are saved to the database.
InvoiceAmount__cGrossAmountB3__cGrossAmountB2__cGrossAmountB1__cInvoicedAmountNet1__cInvoicedAmountNet2__cInvoicedAmountNet3__cInvoiceSurchargeB3Abs__cInvoiceSurchargeB2Abs__cRateDiscount1AbsCustom__cRateDiscount2AbsCustom__cRateDiscount3AbsCustom__cRateDiscount4AbsCustom__cInvoicedQuantity__cSalesPrice__c