1. 业务处理（transaction）字段选择：
创建后续借记（subsequent debit）
ItemData DE_CRE_IND = 'X'
HeaderData INVOICE_IND = 'X'
创建后续贷记（subsequent credit）
ItemData DE_CRE_IND = 'X'
HeaderData INVOICE_IND = ' '
发票（invoice）
HeaderData INVOICE_IND = 'X'
贷方凭证（credit demo）
HeaderData INVOICE_IND = ' '
2. 标识: 货物项目/交货成本/全部（Indicator: Goods Items/Delivery Costs/Both）
货物/服务项目（Goods/service items）
ItemData COND_TYPE = ' '
COND_ST_NO = ' '
COND_COUNT = ' '
计划交货成本（Planned delivery costs）
ItemData COND_TYPE = 'X'
COND_ST_NO = 'X'
COND_COUNT = 'X'
form frm_invoice_create2 .
data: str type string.
data: ls_headerdata like bapi_incinv_create_header,
lt_itemdata like table of bapi_incinv_create_item,
ls_itemdata like bapi_incinv_create_item,
lt_return like table of bapiret2,
ls_return like bapiret2,
lv_invoicedocnumber like bapi_incinv_fld-inv_doc_no,
lv_fiscalyear like bapi_incinv_fld-fisc_year.
data: lv_price1 type bapi_rmwwr.
data: lv_item type n length 6.
data: lv_retpo type retpo.
clear:l_menge,ls_headerdata,lv_fiscalyear,lv_price1,lv_item.
* 处理退货和非退货项目
clear: gt_ret,gt_ret[],gt_inv,gt_inv[].
loop at gt_alv into gs_alv where source = 'EKBE'.
clear: lv_retpo.
select single retpo into lv_retpo from ekpo where ebeln = gs_alv-ebeln and ebelp = gs_alv-ebelp.
loop at gt_invoice into gs_invoice where ebeln = gs_alv-ebeln and ebelp = gs_alv-ebelp.
*---------根据退货标识 放入不同的内表
if lv_retpo = 'X'."退货项目
if gs_invoice-shkzg = 'H'.
gs_invoice-dmbtr = 0 - gs_invoice-dmbtr.
endif.
gt_ret-ebeln = gs_invoice-ebeln."采购订单
gt_ret-ebelp = gs_invoice-ebelp."行项目
gt_ret-lfbnr = gs_invoice-lfbnr. "参考凭证号
gt_ret-lfpos = gs_invoice-lfpos."行项目
gt_ret-lfgja = gs_invoice-lfgja."年度
gt_ret-mwskz = gs_invoice-mwskz."税码
gt_ret-dmbtr = gs_invoice-dmbtr. "金额
gt_ret-menge = gs_invoice-menge. "数量
select single meins into gt_ret-meins from ekpo where ebeln = gs_invoice-ebeln and ebelp = gs_invoice-ebelp.
collect gt_ret.
else.
if gs_invoice-shkzg = 'H'.
gs_invoice-dmbtr = 0 - gs_invoice-dmbtr.
endif.
gt_inv-ebeln = gs_invoice-ebeln."采购订单
gt_inv-ebelp = gs_invoice-ebelp."行项目
gt_inv-lfbnr = gs_invoice-lfbnr. "参考凭证号
gt_inv-lfpos = gs_invoice-lfpos."行项目
gt_inv-lfgja = gs_invoice-lfgja."年度
gt_inv-mwskz = gs_invoice-mwskz."税码
gt_inv-dmbtr = gs_invoice-dmbtr. "金额
gt_inv-menge = gs_invoice-menge. "数量
select single meins into gt_inv-meins from ekpo where ebeln = gs_invoice-ebeln and ebelp = gs_invoice-ebelp.
collect gt_inv.
endif.
endloop.
endloop.
*---正常订单发票校验
clear: ls_headerdata.
ls_headerdata-invoice_ind = 'X'. "当采购订单行项目是正常订单时该标识必为X，为miro界面上的业务处理为1.发票否则为2.贷方凭证（invoice_ind='X'表示miro界面最上部的业务处理是1.发票,invoice_ind='', 表示miro界面最上部的业务处理为2.贷方凭证）
ls_headerdata-doc_type = 'YX'.
ls_headerdata-doc_date = p_datum.
ls_headerdata-pstng_date = g_post_date.
ls_headerdata-bline_date = g_post_date. "基线日期/付款计算的起始日期
ls_headerdata-comp_code = p_bukr2.
ls_headerdata-currency = 'CNY'.
ls_headerdata-calc_tax_ind = 'X'. "自动结算税额
ls_headerdata-bus_area = '9999'.
clear: lv_item.
loop at gt_inv.
lv_item = lv_item + 1. "发票行项目号
ls_itemdata-invoice_doc_item = lv_item.
ls_itemdata-po_number = gt_inv-ebeln.
ls_itemdata-po_item = gt_inv-ebelp.
ls_itemdata-ref_doc = gt_inv-lfbnr.
ls_itemdata-ref_doc_year = gt_inv-lfgja.
ls_itemdata-ref_doc_it = gt_inv-lfpos.
ls_itemdata-item_amount = gt_inv-dmbtr.
ls_itemdata-quantity = gt_inv-menge.
ls_itemdata-po_unit = gt_inv-meins.
if gt_ret-mwskz is not initial.
ls_itemdata-tax_code = gt_inv-mwskz.
else.
ls_itemdata-tax_code = p_mwskz.
endif.
append ls_itemdata to lt_itemdata.
clear: ls_itemdata.
lv_price1 = lv_price1 + abs( gt_inv-dmbtr ).
endloop.
ls_headerdata-gross_amount = lv_price1 * ( 100 + l_mwskz ) / 100. "总金额
refresh: lt_return.clear: ls_return,invoicedocnumber.
call function 'BAPI_INCOMINGINVOICE_CREATE'
exporting
headerdata = ls_headerdata
importing
invoicedocnumber = invoicedocnumber
tables
itemdata = lt_itemdata
return = lt_return.
loop at lt_return into ls_return where type = 'E' or type = 'A'.
cp_eind = 'X'.
exit.
endloop.
if cp_eind ne 'X'.
call function 'BAPI_TRANSACTION_COMMIT'
exporting
wait = 'X'.
*---插入值到表ZTFI014
gs_ztfi014-tcode = sy-tcode.
gs_ztfi014-seqno = p_datum.
gs_ztfi014-objnr = p_bukr2.
gs_ztfi014-gjahr = p_datum(4).
gs_ztfi014-bukrs = p_bukrs.
gs_ztfi014-belnr = invoicedocnumber.
modify ztfi014 from gs_ztfi014.
else.
call function 'BAPI_TRANSACTION_ROLLBACK'.
loop at lt_return into ls_return.
clear gs_log.
gs_log-type = ls_return-type.
gs_log-docno = invoicedocnumber.
call function 'MESSAGE_TEXT_BUILD'
exporting
msgid = ls_return-id
msgnr = ls_return-number
msgv1 = ls_return-message_v1
msgv2 = ls_return-message_v2
msgv3 = ls_return-message_v3
msgv4 = ls_return-message_v4
importing
message_text_output = gs_log-message.
case gs_log-type.
when 'S'.
gs_log-icon = '3'.
when 'W'.
gs_log-icon = '2'.
when 'E' or 'A'.
gs_log-icon = '1'.
when others.
endcase.
append gs_log to gt_log.
clear ls_return.
endloop.
message e001(00) with '第一张发票预制失败，请点击显示消息查看详情！'.
endif.
*---退货订单发票校验
clear: ls_headerdata-invoice_ind,ls_headerdata-gross_amount. "发票标志 退货是该标识必须为空
clear: lv_item,ls_itemdata,ls_return,invoicedocnumber,lv_price1.
refresh: lt_itemdata,lt_return.
loop at gt_ret.
lv_item = lv_item + 1. "发票行项目号
ls_itemdata-invoice_doc_item = lv_item.
ls_itemdata-po_number = gt_ret-ebeln.
ls_itemdata-po_item = gt_ret-ebelp.
ls_itemdata-ref_doc = gt_ret-lfbnr.
ls_itemdata-ref_doc_year = gt_ret-lfgja.
ls_itemdata-ref_doc_it = gt_ret-lfpos.
ls_itemdata-item_amount = abs( gt_ret-dmbtr ).
ls_itemdata-quantity = gt_ret-menge.
ls_itemdata-po_unit = gt_ret-meins.
if gt_inv-mwskz is not initial.
ls_itemdata-tax_code = gt_ret-mwskz.
else.
ls_itemdata-tax_code = p_mwskz.
endif.
append ls_itemdata to lt_itemdata.
clear: ls_itemdata.
lv_price1 = lv_price1 + abs( gt_ret-dmbtr ).
endloop.
ls_headerdata-gross_amount = lv_price1 * ( 100 + l_mwskz ) / 100. "总金额
refresh: lt_return.clear: ls_return.
call function 'BAPI_INCOMINGINVOICE_CREATE'
exporting
headerdata = ls_headerdata
importing
invoicedocnumber = invoicedocnumber
tables
itemdata = lt_itemdata
return = lt_return.
loop at lt_return into ls_return where type = 'E' or type = 'A'.
cp_eind = 'X'.
exit.
endloop.
if cp_eind ne 'X'.
call function 'BAPI_TRANSACTION_COMMIT'
exporting
wait = 'X'.
*---插入值到表ZTFI014
gs_ztfi014-tcode = sy-tcode.
gs_ztfi014-seqno = p_datum.
gs_ztfi014-objnr = p_bukr2.
gs_ztfi014-gjahr = p_datum(4).
gs_ztfi014-bukrs = p_bukrs.
gs_ztfi014-belnr = invoicedocnumber.
modify ztfi014 from gs_ztfi014.
else.
call function 'BAPI_TRANSACTION_ROLLBACK'.
loop at lt_return into ls_return.
clear gs_log.
gs_log-type = ls_return-type.
gs_log-docno = invoicedocnumber.
call function 'MESSAGE_TEXT_BUILD'
exporting
msgid = ls_return-id
msgnr = ls_return-number
msgv1 = ls_return-message_v1
msgv2 = ls_return-message_v2
msgv3 = ls_return-message_v3
msgv4 = ls_return-message_v4
importing
message_text_output = gs_log-message.
case gs_log-type.
when 'S'.
gs_log-icon = '3'.
when 'W'.
gs_log-icon = '2'.
when 'E' or 'A'.
gs_log-icon = '1'.
when others.
endcase.
append gs_log to gt_log.
clear ls_return.
endloop.
message e001(00) with '第二张发票预制失败，请点击显示消息查看详情！'.
endif.
endform. " FRM_INVOICE_CREATE2
注意：
在PO收货后，做发票校验，发现一个问题，就是在headerdata中有个参数 calc_tax_ind ，如果将这个值‘X’，那么在
ME23N中会看不到生成的发票校验凭证invoicedocnumber的值。
headerdata中的必输值：
invoice_ind 为'X'
doc_date
pstng_date
comp_code
currency
gross_amount
itemdata中的必输值：
invoice_doc_item
po_number
po_item
item_amount
quantity
po_unit
ref_doc
ref_doc_year
ref_doc_it