FTI Posting with manual number in D365fo x++

FTI Posting with manual number in D365fo x++

[ExtensionOf(classStr(CustPostInvoice))]
final class CustPostInvoice_AdremGH_Extension
{
    protected container getInvoiceIdAndVoucher(CustInvoiceTable _custInvoiceTable, NumberSeq _numberSeq)
    {
        InvoiceId   _invoiceId;
        Voucher     _voucher;

        next getInvoiceIdAndVoucher(_custInvoiceTable, _numberSeq);

        CustFreeInvoiceCalcTotals custFreeInvoiceCalcTotals = this.custFreeInvoiceCalcTotals;
        boolean creditNote = this.isCreditNote(custFreeInvoiceCalcTotals.custFreeInvoiceInvoiceAmount());

        if (!this.validate(custFreeInvoiceCalcTotals.custFreeInvoiceInvoiceAmount(), creditNote))
        {
            Message::Add(MessageSeverity::Error, "@SYS25904");
            throw Exception::Error;
        }

        NumberSeq newNumSeq = this.allocateNumAndVoucher(creditNote);

        if (CustParameters::find().ADMFTIManualNum)
        {
            [_invoiceId, _voucher] = this.getNumAndVoucher(_custInvoiceTable, newNumSeq);
            if (!CustInvoiceJour::checkDuplicateNum_W(_invoiceId, '', custInvoiceTable.InvoiceDate))
            {
                throw error("@SYS25904");
            }
        }
        else
        {
            [_invoiceId, _voucher] = newNumSeq.numAndVoucher();
        }

        if (custInvoiceTable.CustomerRef && RetailMCRChannelTable::findForCurrentUser().mcrEnableOrderCompletion)
        {
            _invoiceId = custInvoiceTable.CustomerRef;
            _voucher = custInvoiceTable.mcrLedgerVoucher;
        }

        if (!_voucher)
        {
            throw error("@SYS71652");
        }

        return [_invoiceId, _voucher];
    }

    private container getNumAndVoucher(CustInvoiceTable _custInvoiceTable, NumberSeq _numberSeq)
    {
        container ret;
        if (_custInvoiceTable.CustomerRef && CustParameters::find().ADMFTIManualNum)
        {
            _numberSeq.parmNumberSequenceCode('');
            _numberSeq.parmNumberSequenceId(0);

            ret = [_custInvoiceTable.CustomerRef, _numberSeq.voucher()];
        }
        else
        {

            ret = _numberSeq.numAndVoucher();

        }

        return ret;
    }

}