一段程序用于发货单审核生成出库单，程序代码应该也不复杂，但是这两天测试就是发现如此奇怪的事。第一次审核正常，两条发货单记录生成了两条出库单记录；第二次第一行记录正常，第二条记录变成两个，第三次第一条记录还是正常，第二条记录变成三个：
程序代码如下：
有点长，简要说明如下：
//变量声明
//表头取数；
//插入表头数据；
//表体循环取数；
//表体循环插入值；
//插入成功，反写订单进度和当前单据审核状态；
用过调试和数据库的事件探查器跟踪，都没有发现什么错误，数据库检查过，已删除相关的触发器，但是结果还一样。但是就是如上出现奇怪现象，请高手指教。
if dw_1.accepttext() < 1 then return
if dw_detail.accepttext() < 1 then return
ll_mrow = dw_detail.getrow()
ll_mpid = dw_detail.getitemnumber(ll_mrow,"DLID")
d_outdate = date(dw_detail.getitemdatetime(1,"outdate"))
ls_checkopinion = dw_detail.getitemstring(1,"checkopinion")
dd_today = date(uf_getserverdatetime())
d_cveridate = uf_getserverdatetime()
ls_cveriperson = uf_returnusername(g_app.id)
if isnull(d_outdate) then
messagebox('提示','实发送货日期不允许为空，请核对后输入')
return
end if
ll_istate = DaysAfter(d_outdate,dd_today)
if abs(ll_istate) > 10 then
if messagebox('提示','实发日期与当前日期相差过大，是否继续？',Question!,yesno!) = 2 then return
end if
st_1.visible = true
ls_modify_new = 'Y'
dw_generate.reset()
dd_today = date(uf_getserverdatetime())
ls_head_yyyymm = string(date(dd_today),'yyyymm')
//这里是取单号
select top 1 cNumber into :ll_foot
from VoucherHistory where CardNumber = 'XS'
using sqlca;
if sqlca.sqlcode = 100 then
insert VoucherHistory(CardNumber,cContentRule,cseed,cNumber,bEmpty) values
('XS','年月',1,1,0) using sqlca;
end if
if isnull(ll_foot) then ll_foot = 1
//ls_ccode = ls_head_yyyymm + string(10000 + ll_foot)
nn:
ls_ccode = string(long(ls_head_yyyymm) * 10000 + ll_foot)
ls_ccode = 'XS'+ls_ccode
//上面这里还不能完全肯定避免单据号重复，注意必须符合单据号不允许重复的原则。
select top 1 ccode into :ls_tcccode from rdrecord where ccode = :ls_ccode
using sqlca;
if sqlca.sqlcode = 0 then
// messagebox('提示','单据号已存在，请核对后重新输入')
// return
ll_foot = ll_foot +1
goto nn
end if
ls_rdstyle = dw_detail.getitemstring(ll_mrow,"crdcode")
ls_department = dw_detail.getitemstring(ll_mrow,"cdepcode")
//if isnull(ls_department) then ls_department = ''
ls_person = dw_detail.getitemstring(ll_mrow,"cpersoncode")
//if isnull(ls_person) then ls_person = ''
ls_cmemo = dw_detail.getitemstring(ll_mrow,"cmemo")
//if isnull(ls_cmemo) then ls_cmemo = ''
ls_rdtype = dw_detail.getitemstring(ll_mrow,"cvouchtype")
if isnull(ls_rdtype) then ls_rdtype = '32'
//ls_businesstype = dw_detail.getitemstring(ll_mrow,"cbustype")
if isnull(ls_businesstype) then ls_businesstype = '普通销售'
//ls_cprobatch = dw_detail.getitemstring(ll_mrow,"cprobatch")
//if isnull(ls_cprobatch) then ls_cprobatch = ''
ls_cdefine1 = dw_detail.getitemstring(ll_mrow,"cdefine1")
//if isnull(ls_cdefine1) then ls_cdefine1 = ''
ls_cdefine2 = dw_detail.getitemstring(ll_mrow,"cdefine2")
//if isnull(ls_cdefine2) then ls_cdefine2 = ''
ls_cdefine3 = dw_detail.getitemstring(ll_mrow,"cdefine3")
//if isnull(ls_cdefine3) then ls_cdefine3 = ''
d_cdefine4 = dw_detail.getitemdatetime(ll_mrow,"cdefine4")
//if isnull(d_cdefine4) then d_cdefine4 = ''
ll_cdefine5 = dw_detail.getitemnumber(ll_mrow,"cdefine5")
//if isnull(ll_cdefine5) then ll_cdefine5 = ''
d_cdefine6 = dw_detail.getitemdatetime(ll_mrow,"cdefine6")
//if isnull(d_cdefine6) then d_cdefine6 = ''
d_cdefine7 = dw_detail.getitemdecimal(ll_mrow,"cdefine7")
//if isnull(ls_cdefine3) then ls_cdefine3 = ''