1、选择屏幕字段搜索帮助AT SELECTION-SCREEN ON VALUE-REQUEST
2、自定义屏幕字段搜索帮助PROCESS ON VALUE-REQUEST
结合BAPI: F4IF_INT_TABLE_VALUE_REQUEST 实现搜索帮助功能
其中AT SELECTION-SCREEN ON VALUE-REQUEST用法参考如下文章
https://blog.csdn.net/wangjolly/article/details/80075531
PROCESS ON VALUE-REQUEST使用方法如下：
客制化屏幕PAI后面
PROCESS AFTER INPUT.
PROCESS ON VALUE-REQUEST.
FIELD 需要搜索帮助的字段 MODULE 实现模块.
TYPES: BEGIN OF ty_bank_info,
zskzh TYPE zfis009-zskzh,
zskylh TYPE zfis009-zskylh,
zskmc TYPE zfis009-zskmc,
xezer TYPE lfbk-xezer,
bkont TYPE lfbk-bkont,
END OF ty_bank_info.
MODULE sh_get_zskzh INPUT.
PERFORM frm_sh_get_zskzh.
ENDMODULE.
FORM frm_sh_get_zskzh .
DATA: lt_value TYPE STANDARD TABLE OF ty_bank_info,
ls_value LIKE LINE OF lt_value.
DATA: lt_return_value TYPE STANDARD TABLE OF ddshretval.
DATA: lt_lfbk TYPE STANDARD TABLE OF lfbk.
DATA: ls_lfbk LIKE LINE OF lt_lfbk.
DATA: ls_bnka TYPE bnka.
DATA: lv_bkont TYPE lfbk-bkont.
DATA: lv_line TYPE i.
GET CURSOR LINE lv_line.
"lt_value 搜索帮助数据集
IF lt_value[] IS NOT INITIAL.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'ZSKZH'
dynpprog = sy-repid
dynpnr = '9000'
dynprofield = 'GS_ITEMS-ZSKZH'
value_org = 'S'
callback_program = sy-repid
callback_form = 'FRM_CB_FORM'
TABLES
value_tab = lt_value
return_tab = lt_return_value.
READ TABLE lt_return_value INTO DATA(ls_return_value) INDEX 1.
IF sy-subrc = 0.
gs_items-zskzh = ls_return_value-fieldval.
ENDIF.
ENDIF.
ENDFORM.
*&---------------------------------------------------------------------*
*& Form FRM_CB_FORM
*&---------------------------------------------------------------------*
FORM frm_cb_form TABLES record_tab STRUCTURE seahlpres
CHANGING shlp TYPE shlp_descr_t
callcontrol LIKE ddshf4ctrl.
DATA: interface LIKE LINE OF shlp-interface.
READ TABLE shlp-interface INTO interface INDEX 1.
interface-shlpfield+4(1) = '2'.
interface-valfield = 'GS_ITEMS-ZSKYLH'.
APPEND interface TO shlp-interface.
ENDFORM. "bo_callback_form子例程：FORM frm_cb_form搜索帮助返回多个值，实现字段：GS_ITEMS-ZSKZH和GS_ITEMS-ZSKYLH同时返回
