SM30维护数据，生成定制请求。

**上下ALV**效果图定制控制名称代码：*"GLOBAL DEFINITIONINCLUDE ZMMR021_TOP.*"SCREEN DEFINITIONINCLUDE ZMMR021_SCL.*"SCREEN PBOINCLUDE ZMMR021_PBO.*"SCREEN PAIINCLUDE ZMMR021_PAI.*"FORMINCLUDE ZMMR021_FRM.*&-----

事务代码：BPBP相关的方法/BAPI方法：cvis_ei_extern_t,cl_md_bp_maintain=>maintain(EXPORTINGi_data= lt_dataIMPORTINGe_return = lt_return ).对税号单独操作（BP会强制将CN0改为CN5）BAPI：BAPI_BUPA_TAX_ADD，BAPI_BUPA_TAX_CHANGE明细：银行/税号