目录
[1 简介](#1 简介)
[2 业务数据例子](#2 业务数据例子)
[3 选择增强 & 代码](#3 选择增强 & 代码)
[1）BADI: MM_PUR_S4_PO_MODIFY_HEADER](#1）BADI: MM_PUR_S4_PO_MODIFY_HEADER)
[2）BADI: MM_PUR_S4_PO_MODIFY_ITEM](#2）BADI: MM_PUR_S4_PO_MODIFY_ITEM)
[4 自定义 Adobe form](#4 自定义 Adobe form)
[1）PO Master form](#1）PO Master form)
[2）PO form](#2）PO form)
[5 前台主数据配置](#5 前台主数据配置)
[6 后台配置](#6 后台配置)
[2）关联自定义的 PO Master form 和 PO form。](#2）关联自定义的 PO Master form 和 PO form。)
1 简介
标准的 SAP 采购订单消息输出不会带税金额，但实际业务都会有税金额产生，这时候我们不得不选择做增强+创建自定义 Adboe form 的方式满足实际业务。
2 业务数据例子
PO 表头和行项目明细分别增加，自定义字段 PO 总金额（净价+税价）和自定义 PO 税金额和税码。自定义的 PO 总金额和 PO 税金额反映到 Adobe 自定义模板。
3 选择增强 & 代码
1）BADI: MM_PUR_S4_PO_MODIFY_HEADER
* purchaseorderchange-<your_field_name> = 'Your field content'.
data: lv_total_amount type if_ex_mmpur_final_check_po=>bwert.
data lv_taxRate TYPE P length 2.
loop at purchaseorderitem_table into data(ls_item) where purchasingdocumentdeletioncode = space.
clear lv_taxRate.
case ls_item-taxcode.
when 'J2'.
lv_taxRate = 13.
when 'Y1'.
lv_taxRate = 11.
when 'J4'.
lv_taxRate = 9.
when 'JB'.
lv_taxRate = 6.
when 'R3'.
lv_taxRate = 5.
when 'JC'.
lv_taxRate = 4.
when 'R2'.
lv_taxRate = 3.
when 'J5'.
lv_taxRate = 1.
when 'J0'.
lv_taxRate = 0.
WHEN others.
endcase.
lv_total_amount = lv_total_amount + ls_item-netamount + ls_item-netamount * lv_taxRate / 100.
endloop.
PURCHASEORDERCHANGE-YY1_PO_TOTAL_VALUE_PDH = lv_total_amount.
2）BADI: MM_PUR_S4_PO_MODIFY_ITEM
" purchaseorderitemchange-<your_field_name> = 'Enter your field content'.
"Defaulting of TaxCode for PO item in first round-trip
"IF purchaseorderitem_old IS INITIAL.
" purchaseorderitemchange-taxcode = 'V2'.
"ENDIF.
"Defaulting of PurchasingInfoRecordUpdateCode for PO item
"either in first round-trip or when material or plant changes
"IF purchaseorderitem_old IS INITIAL
" OR purchaseorderitem-material <> purchaseorderitem_old-material
" OR purchaseorderitem-plant <> purchaseorderitem_old-plant.
" purchaseorderitemchange-purchasinginforecordupdatecode = 'B'.
"ENDIF.
"Set the info update flag when the supplier number is filled.
"IF purchaseorderitem-suppliermaterialnumber IS NOT INITIAL.
" IF purchaseorderitem_old-purchasinginforecordupdatecode IS INITIAL AND
" purchaseorderitem-purchasinginforecordupdatecode IS INITIAL.
" purchaseorderitemchange-purchasinginforecordupdatecode = 'A'.
" ENDIF.
"ENDIF.
"Defaulting of Shipping Type in first roundtrip
"IF purchaseorderitem_old IS INITIAL AND purchaseorderitemchange-shippingtype IS INITIAL.
" purchaseorderitemchange-shippingtype = '01'.
"ENDIF.
data lv_taxcode type C length 2 .
data lv_taxRate TYPE P length 2.
if purchaseorderitemchange-taxcode is not initial.
lv_taxcode = purchaseorderitemchange-taxcode.
else.
select single TaxCode from I_PurchaseOrderItemAPI01
where PurchaseOrder = @purchaseorderitem-purchaseorder and PurchaseOrderItem = @purchaseorderitem-PurchaseOrderItem
into @lv_taxcode.
endif.
case lv_taxcode.
when 'J2'.
lv_taxRate = 13.
when 'Y1'.
lv_taxRate = 11.
when 'J4'.
lv_taxRate = 9.
when 'JB'.
lv_taxRate = 6.
when 'R3'.
lv_taxRate = 5.
when 'JC'.
lv_taxRate = 4.
when 'R2'.
lv_taxRate = 3.
when 'J5'.
lv_taxRate = 1.
when 'J0'.
lv_taxRate = 0.
WHEN others.
endcase.
if lv_taxcode is not initial.
purchaseorderitemchange-yy1_po_item_tax_amount_pdi = ( purchaseorderitem-netamount * lv_taxRate ) / 100 .
endif.
purchaseorderitemchange-yy1_po_tax_coce_pdi = lv_TaxCode .
4 自定义 Adobe form
自定义 PO Master form 和 PO form 关联起来。基于标准的 PO Master form 和 PO form 复制下来，然后再增加税金额字段。总金额字段重新命名成自定义字段，这样才能接收到前台 PO 自定义总金额数据。
1）PO Master form
2）PO form
5 前台主数据配置
基于常规的消息输出挨个定义即可。
6 后台配置
1）基于常规规则定义输出，可以参考标准来配即可。
2）关联自定义的 PO Master form 和 PO form。
