Hi Rakesh Gupta ,
The field that you are using as a select option is not a key field and it will not display serach help.
You need to explicitly write code to display the serach help on selection screen for that field : - PA0587-EEPFN.
You can serach in SCN to create a serach help for this field.
I hope, since it is not having any search help or match code assign to it, it is not able to prompt a popup for F4 help.
If this is the case, you can code your own F4 help with custom code
at selection-screen on value-request for S_EEPFN -LOW. perform F_GET_RELEASED_TRS changing S_EEPFN -LOW. at selection-screen on value-request for S_EEPFN -HIGH. perform F_GET_RELEASED_TRS changing S_EEPFN -HIGH. form F_GET_RELEASED_TRS changing P_EEPFN. data: it_tab type value_tab. "declare the internal table as u like data: it_ret type DDSHRETVAL occurs 0 with header line. select field1 field2 from XXXX into table it_tab. call function 'F4IF_INT_TABLE_VALUE_REQUEST' exporting RETFIELD = 'FIELD2' "field name in your value tab i.e it_tab VALUE_ORG = 'S' tables VALUE_TAB = it_tab return_tab = it_ret. if sy-subrc eq 0. read table it_ret index 1. p_eepfn = it_ret-fieldval. endif. endform. " F_GET_RELEASED_TRS