部分一：根据屏幕已有信息获取帮助信息，填充到内表
FORM get_batch .
DATA l_stepl LIKE sy-stepl."Index of Current Step Loop Line
DATA l_lgort TYPE ekpo-lgort.
DATA l_matnr TYPE ekpo-matnr.
DATA l_xchpf TYPE marc-xchpf.
DATA l_dynpread TYPE STANDARD TABLE OF dynpread WITH HEADER LINE.
" get the index of Current Step Loop Line
CALL FUNCTION 'DYNP_GET_STEPL'
IMPORTING
povstepl = l_stepl EXCEPTIONS
stepl_not_found = 1
OTHERS = 2.
l_dynpread-fieldname = 'WA_ITEM-MATNR'.
l_dynpread-stepl = l_stepl.
APPEND l_dynpread.
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
dyname = sy-repid
dynumb = sy-dynnr
translate_to_upper = 'X'
TABLES
dynpfields = l_dynpread.
READ TABLE l_dynpread WITH KEY fieldname = 'WA_ITEM-MATNR'.
* IF l_dynpread-fieldvalue IS INITIAL.
** material number can not be empty
** MESSAGE e005(z0303) .
* ENDIF.
l_matnr = l_dynpread-fieldvalue.
CALL FUNCTION 'DYNP_GET_STEPL'
IMPORTING
povstepl = l_stepl
EXCEPTIONS
stepl_not_found = 1
OTHERS = 2.
l_dynpread-fieldname = 'WA_ITEM-LGORT'.
l_dynpread-stepl = l_stepl.
APPEND l_dynpread.
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
dyname = sy-repid
dynumb = sy-dynnr
translate_to_upper = 'X'
TABLES
dynpfields = l_dynpread.
READ TABLE l_dynpread WITH KEY fieldname = 'WA_ITEM-LGORT'.
IF l_dynpread-fieldvalue IS INITIAL.
* material number can not be empty
* MESSAGE e398(00) WITH 'Pleas select GI location before input batch'
* space space space.
ENDIF.
l_lgort = l_dynpread-fieldvalue.
CLEAR i_mchb_h.
* i_mchb在之前已经填充的内表。这里也可以直接从数据库中获取需要的帮助信息。：select * into...
*
LOOP AT i_mchb INTO wa_mchb WHERE matnr EQ l_matnr
AND werks EQ p_reswk
AND lgort EQ l_lgort
AND clabs > 0.
APPEND wa_mchb TO i_mchb_h.
ENDLOOP.
ENDFORM. " GET_BATCH
部分二：调用help的module.
MODULE sh_batch INPUT.
PERFORM get_batch.
* data: t_return like ddshretval occurs 0 with header line.sub_callback_batch
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'CHARG'
dynpprog = sy-repid
dynpnr = sy-dynnr
dynprofield = 'WA_ITEMS-CHARG'
value_org = 'S'
TABLES
value_tab = i_mchb_h.
ENDMODULE. " SH_BATCH INPUT
第三部分：在屏幕flow Logic中添加
process on value-request."帮助时触发
field wa_item-charg module sh_batch. "需要帮助的字段