Please find below code to generate pop in abap webdynpro
DATA lo_window_manager TYPEREFTO if_wd_window_manager.
DATA lo_api_component TYPEREFTO if_wd_component.
DATA lo_window TYPEREFTO if_wd_window.
lo_api_component = wd_comp_controller->wd_get_api( ).
lo_window_manager = lo_api_component->get_window_manager( ).
lo_window = lo_window_manager->create_window(
window_name = 'Confirmation'
close_in_any_case = abap_false
message_display_mode = if_wd_window=>co_msg_display_mode_selected
button_kind = if_wd_window=>co_buttons_okcancel
message_type = if_wd_window=>co_msg_type_none
default_button = if_wd_window=>co_button_ok
).
Regards,
Mukesh