Hi Deepak,
Thanks for your reply.
I have checked SPRO settings-Transactions-settings for activities-assign categories to transaction types. but here only they maintained all drop down 5 values.
In coding idid the changes as below..in debugging mode the values showing it_selection_table = li_result1 ). li_result1 tab like as below screen shot.but why it is still showing default value ZAP in webui.??
READ TABLE lt_ddlb INTO ls_ddlb WITH KEY key = ' '.
IF sy-subrc EQ 0.
DELETE lt_ddlb INDEX sy-tabix.
DELETE lt_ddlb WHERE key = ' '.
APPEND ls_ddlb to li_result1.
* INSERT INITIAL LINE INTO lt_ddlb index sy-tabix.
APPEND LINES OF lt_ddlb TO li_result1.
ENDIF.
IF NOT gr_ddlb_category IS BOUND.
CREATE OBJECT gr_ddlb_category
EXPORTING
iv_source_type = 'T'.
ENDIF.
gr_ddlb_category->set_selection_table( it_selection_table = li_result1 ).
rv_valuehelp_descriptor = gr_ddlb_category.
ENDCASE.
ZAP
Thanks & Regards
Kalpana