有些场景下，供应商开发票时会有折扣，开票金额会小于收货金额，过账发票时，系统根据收货金额过账，自动产生折扣金额对应的日记账，与过账发票产生的供应商交易记录自动核销。

public void createDiscountJournal(ERM_VendStatementTable _statementTable){    LedgerJournalTable          journalTable;    LedgerJournalTrans          journalTrans;    Voucher                     voucher;    CustVendOpenTransManager    manager;    VendTransOpen               vendTransOpen;    VendTrans                   vendTrans;    LedgerJournalCheckPost      journalCheckPost;    LedgerJournalName           journalName;    ERM_PurchInvoice            purchInvoice;    ;    if(!_statementTable.discountAmount())        return;    ttsbegin;    select purchInvoice    where purchInvoice.StatementId == _statementTable.StatementId;    journalName = LedgerJournalName::find(VendParameters::find().ERM_DiscountJournalNameId);    voucher = NumberSeq::newGetVoucher(LedgerParameters::numRefLedgerTempVoucher()).voucher();    journalTable.initFromLedgerJournalName(journalName.JournalName);    journalTable.insert();    journalTrans.JournalNum         = journalTable.JournalNum;    journalTrans.Voucher            = voucher;    journalTrans.TransDate          = purchInvoice.InvoiceDate? purchInvoice.InvoiceDate:systemDateGet();    journalTrans.AccountType        = LedgerJournalACType::Vend;    journalTrans.AccountNum         = _statementTable.VendAccount;    journalTrans.AmountCurDebit     = _statementTable.discountAmount();    journalTrans.Approved           = NoYes::Yes;    journalTrans.OffsetAccountType  = journalName.OffsetAccountType;    journalTrans.OffsetAccount      = journalName.OffsetAccount;    journalTrans.CurrencyCode       = VendTable::find(_statementTable.VendAccount).Currency;    journalTrans.ExchRate           = Currency::exchRate(journalTrans.CurrencyCode);    journalTrans.SettleVoucher      = SettlementType::SelectedTransact;    journalTrans.insert();    manager = CustVendOpenTransManager::construct(journalTrans);    select vendTransOpen    exists join vendTrans    where vendTransOpen.RefRecId == vendTrans.RecId &&            vendTrans.Invoice == _statementTable.StatementId &&                vendTrans.AccountNum == _statementTable.VendAccount;    manager.updateTransMarked(vendTransOpen,NoYes::Yes);    journalCheckPost = LedgerJournalCheckPost::newLedgerJournalTable(journalTable,NoYes::Yes);    journalCheckPost.run();    _statementTable.Status = ERM_VendStatementStatus::Invoiced;    _statementTable.update();    _statementTable.dataSource().reread();    _statementTable.dataSource().refresh();    _statementTable.dataSource().active();    ttscommit;}

AX2009 放在这里做个备份